A combined cycle power generation system and power system employing coropu solid fuel

Abstract

The application is suitable for the technical field of power generation equipment, and provides a combined cycle power generation system and a power system using the Corliss solid fuel. The power generation system comprises a Corliss solid fuel boiler, a hydrogen combustion chamber, a Corliss waste heat recovery power generation unit and a generator. The combined cycle power generation system provided by the embodiment of the application uses the Corliss solid fuel boiler, the hydrogen combustion chamber and the Corliss device in combination, so that they work together to generate power, and the power generation efficiency is significantly improved. In addition, the combined cycle power generation system provided by the embodiment of the application only discharges nitrogen and silicon dioxide to the outside, nitrogen can be directly discharged into the air, and will not cause any environmental pollution; silicon dioxide can be recycled and reused, and will also not cause any environmental pollution.

Description

Technical Field

[0001] This application belongs to the field of power generation equipment technology, and in particular relates to a combined cycle power generation system using Krupp solid fuel. Background Technology

[0002] Conventional power generation equipment typically only uses steam turbines or gas turbines, resulting in low power generation efficiency and failing to achieve high-efficiency power generation. Furthermore, the steam turbines or gas turbines in conventional power generation equipment emit pollutants; even after purification treatments such as dust removal, desulfurization, and denitrification, the exhaust gases still contain significant amounts of pollutants. Additionally, the fuel used in conventional steam turbines or gas turbines presents a relatively dangerous storage problem. Summary of the Invention

[0003] In view of this, embodiments of this application provide a combined cycle power generation system using Krupp solid fuel to solve the problems of low power generation efficiency, pollutant emissions, and dangerous fuel storage in current power generation equipment.

[0004] This application provides a combined cycle power generation system using Cropp solid fuel, comprising: a Cropp solid fuel boiler, a hydrogen combustion chamber, an evaporator, a heat exchanger, a generator, and a Cropp waste heat recovery power generation unit; the Cropp waste heat recovery power generation unit includes a Cropp unit, a hydrogen heat exchanger, a multi-stage hydrogen expander, a steam recovery unit, and a silica heat exchanger. The multi-stage hydrogen expander and the generator are coaxially arranged and drive the generator to generate electricity. The combustible gas outlet on the shell side of the Cropp solid fuel boiler is directly or indirectly connected to the hydrogen combustion chamber; the combustion exhaust gas outlet of the hydrogen combustion chamber is connected to a storage tank after passing through the evaporator and the steam recovery unit. The high-pressure hydrogen generated by the Cropp unit is divided into four parts, which are respectively sent to the third tube side of the Cropp solid fuel boiler, the tube side of the silica heat exchanger, the tube side of the hydrogen combustion chamber, and the tube side of the steam recovery unit; after absorbing heat and heating up, it enters the inlet of the multi-stage hydrogen expander.

[0005] Specifically, the Krupp solid fuel boiler also includes a backup heating inlet.

[0006] This application provides another combined cycle power generation system using Cropp solid fuel, including a Cropp solid fuel boiler and a Cropp waste heat recovery power generation unit; the Cropp waste heat recovery power generation unit includes a Cropp unit, a hydrogen heat exchanger, a multi-stage hydrogen expander, and a silica heat exchanger. The multi-stage hydrogen expander and the generator are coaxially arranged and drive the generator to generate electricity; the metal oxides discharged after combustion in the Cropp solid fuel boiler are cooled by the shell side of the silica heat exchanger before being discharged. The high-pressure hydrogen produced by the Krupp plant is divided into two parts. The first part passes through the shell side of the hydrogen heat exchanger and the third tube side of the Krupp solid fuel boiler, absorbing heat and heating up before entering the third-stage expansion inlet of the multi-stage hydrogen expander. After doing work in the multi-stage hydrogen expander, it is discharged from the fourth-stage expansion outlet. The second part is sent to the tube side of the silica heat exchanger, absorbing heat and heating up before entering the first-stage expansion inlet of the multi-stage hydrogen expander. After doing work in the multi-stage hydrogen expander, it is discharged from the second-stage expansion outlet. The hydrogen from the fourth-stage expansion outlet of the multi-stage hydrogen expander passes through the tube side of the hydrogen heat exchanger, cools down, and mixes with the hydrogen from the second-stage expansion outlet of the multi-stage hydrogen expander. The mixed hydrogen is then returned to the Krupp plant for hydrogen absorption.

[0007] Specifically, the combined cycle power generation system also includes a flue gas heat exchanger; the flue gas generated after combustion in the Krupp solid fuel boiler is cooled by waste heat recovery in the shell side of the flue gas heat exchanger before being discharged. The high-pressure hydrogen produced by the Krupp plant is divided into three parts. The first part passes through the shell side of the hydrogen heat exchanger and the third tube side of the Krupp solid fuel boiler, absorbing heat and heating up before entering the third-stage expansion inlet of the multi-stage hydrogen expander. After doing work in the multi-stage hydrogen expander, it exits from the fourth-stage expansion outlet. The second part is sent to the tube side of the silica heat exchanger, absorbing heat and heating up before entering the first-stage expansion inlet of the multi-stage hydrogen expander. After doing work in the multi-stage hydrogen expander, it exits from the second-stage expansion outlet. The third part is sent to the tube side of the flue gas heat exchanger, absorbing heat and heating up before entering the first-stage expansion inlet of the multi-stage hydrogen expander. After doing work in the multi-stage hydrogen expander, it exits from the second-stage expansion outlet. The hydrogen at the fourth-stage expansion outlet of the multi-stage hydrogen expander is cooled after passing through the tube side of the hydrogen heat exchanger and mixed with the hydrogen at the second-stage expansion outlet of the multi-stage hydrogen expander. The mixed hydrogen is then returned to the Krupp plant for hydrogen absorption.

[0008] This application also provides a third type of combined cycle power system using Cropp solid fuel, including a Cropp solid fuel boiler, a generator, a gas turbine power generation unit, and a Cropp waste heat recovery power generation unit; the gas turbine power generation unit includes a metal hydride hydrogen pressurization unit, a gas turbine, an evaporator, and a heat exchanger; the Cropp waste heat recovery power generation unit includes a Cropp unit, a multi-stage hydrogen expander, a steam recovery unit, and a silica heat exchanger; the multi-stage hydrogen expander and the gas turbine are arranged coaxially in sequence to form a combined power unit, driving the generator to generate electricity. The gas turbine includes a compressor, a combustion chamber, and a turbine; the compressor is used to compress the combustion gas to a preset pressure and deliver the compressed combustion gas to the combustion chamber; a fan is provided in front of the compressor of the gas turbine; an outer bypass duct is provided outside the combined power unit composed of the motor, the multi-stage hydrogen expander, and the gas turbine; an air inlet is provided on the outer bypass duct, and the air inlet is located in front of the fan; an evaporator and a steam recovery unit are provided at the rear end of the turbine. The combustible gas outlet on the shell side of the Krupp solid fuel boiler is directly or indirectly connected to the combustion chamber of the gas turbine; the exhaust gas outlet of the turbine in the gas turbine is connected to the storage tank after passing through the evaporator and steam recovery unit. The high-pressure hydrogen produced by the hydrogen release from the Krupp unit is divided into five parts, which are respectively sent to the third tube side of the Krupp solid fuel boiler, the intercooler tube side of the compressor, the tube side of the silica heat exchanger, the heat exchange medium jacket of the hydrogen absorption and heat release zone of the metal hydride hydrogen pressurization unit, and the tube side of the steam recovery unit; after absorbing heat and heating up, it enters the inlet of the multi-stage hydrogen expander.

[0009] This application also provides a fourth type of combined cycle power generation system using Cropp solid fuel, comprising: a gas turbine power generation unit and a Cropp waste heat recovery power generation unit; the gas turbine power generation unit includes a Cropp solid fuel boiler, an evaporator, a heat exchanger, a metal hydride hydrogen pressurization unit, and a gas turbine; the Cropp waste heat recovery power generation unit includes a Cropp unit, a multi-stage hydrogen expander, a steam recovery unit, and a silica heat exchanger. The multi-stage hydrogen expander and the gas turbine are arranged coaxially in sequence to form a combined power unit, driving a generator to generate electricity. The gas turbine has a combustion chamber, with a compressor and a turbine on both sides of the combustion chamber, and an evaporator and a steam recovery unit at the rear end of the turbine. The combustible gas outlet on the shell side of the Cropp solid fuel boiler is directly or indirectly connected to the combustion chamber of the gas turbine; the combustion exhaust gas outlet of the turbine in the gas turbine is connected to a storage tank after passing through the evaporator and the steam recovery unit.

[0010] Specifically, the combined cycle power generation system also includes a steam turbine and a condenser; the steam turbine, multi-stage hydrogen expander, and gas turbine are arranged coaxially in sequence to form a combined power unit that drives a generator to generate electricity; the first tube outlet of the Krupp solid fuel boiler is connected to the high-pressure steam inlet of the steam turbine, and the steam outlet at the tail of the steam turbine returns to the first tube inlet of the Krupp solid fuel boiler via the condenser.

[0011] Specifically, the combustion chamber of the gas turbine is equipped with a hydrogen nozzle.

[0012] Specifically, the high-temperature hydrogen produced by the Krupp solid fuel boiler is pressurized by the metal hydride hydrogen pressurization unit and then sent to the combustion chamber of the gas turbine as fuel. The high-pressure hydrogen produced by the Krupp unit is divided into five parts, which are respectively sent to the third tube side of the Krupp solid fuel boiler, the tube side of the steam recovery unit, the tube side of the compressor intercooler, the tube side of the silica heat exchanger, and the heat exchange medium jacket of the hydrogen absorption and release zone of the metal hydride hydrogen pressurization unit; after absorbing heat and heating up, it enters the inlet of the multi-stage hydrogen expander.

[0013] Specifically, the high-temperature hydrogen produced by the Krupp solid fuel boiler is pressurized by the metal hydride hydrogen pressurization unit and then sent to the combustion chamber of the gas turbine as fuel. The high-pressure hydrogen produced by the Krupp unit is divided into five parts, which are respectively sent to the second tube side of the condenser, the tube side of the steam recovery unit, the tube side of the compressor intercooler, the tube side of the silica heat exchanger, and the heat exchange medium jacket of the hydrogen absorption and release zone of the metal hydride hydrogen pressurization unit; after absorbing heat and heating up, it enters the inlet of the multi-stage hydrogen expander.

[0014] Specifically, the combined cycle power generation system also includes a liquefaction unit; the combustion chamber of the gas turbine is equipped with a liquid hydrogen nozzle; and the combustible gas outlet on the shell side of the Krupp solid fuel boiler is liquefied by the liquefaction unit and then connected to the liquid hydrogen nozzle.

[0015] Specifically, the combustion exhaust gas ejected from the gas turbine serves as thrust, providing power.

[0016] The first type of combined cycle power generation system using Cropp solid fuel provided in this application combines a Cropp solid fuel boiler, a hydrogen combustion chamber, and a Cropp unit to generate electricity collaboratively, significantly improving power generation efficiency. Another type of combined cycle power generation system using Cropp solid fuel provided in this application combines a gas turbine and a Cropp unit to generate electricity collaboratively, significantly improving power generation efficiency. Furthermore, the various combined cycle power generation systems using Cropp solid fuel provided in this application emit only nitrogen and silicon dioxide. Nitrogen can be released as a byproduct or directly into the air without causing any environmental pollution; silicon dioxide can be recycled and reused, similarly without causing any environmental pollution. The fuel in the above-mentioned combined cycle power generation systems is Cropp solid fuel, which has stringent reaction conditions, is stable in normal environments, and is safe to store. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the combined cycle power generation system using Krupp solid fuel provided in Embodiment 1 of this application; Figure 2 This is a schematic diagram of the combined cycle power generation system using Krupp solid fuel and oxygen combustion provided in Embodiment 2 of this application; Figure 3 This is a schematic diagram of the combined cycle power generation system using Krupp solid fuel and air combustion provided in Embodiment 2 of this application; Figure 4 This is a schematic diagram of the combined cycle power system using Krupp solid fuel provided in Embodiment 3 of this application; Figure 5 This is a schematic diagram of the combined cycle power generation system of a gas turbine and a Krupp unit using Krupp solid fuel, provided in Embodiment 4 of this application; Figure 6 This is a schematic diagram of the structure of a combined cycle power generation system using a Krupp solid fuel steam turbine, a gas turbine, and a Krupp unit, as provided in Embodiment 5 of this application; Figure 7 These are schematic diagrams of the metal hydride hydrogen pressurization unit in Examples 4 and 5; Figure 8 These are schematic diagrams of the pressure hydrogen replacement center in Examples 4 and 5; Figure 9 This is a schematic diagram of the combined cycle power generation system using a Krupp solid fuel steam turbine, a gas turbine, and a Krupp unit, as provided in Embodiment 6 of this application; Figure 10 This is a schematic diagram of the combined cycle power generation system of a steam turbine, gas turbine and Krupp unit using Krupp solid fuel provided in Embodiment 7 of this application; Figure 11 This is a schematic diagram of the combined cycle power generation system of a steam turbine, gas turbine and Krupp unit using Krupp solid fuel provided in Embodiment 8 of this application; Figure 12 This is a schematic diagram of the combined cycle power generation system using Krupp solid fuel provided in Embodiment 9 of this application.

[0019] Wherein, 1—Krepp solid fuel boiler, 1-1—first tube side of Krepp solid fuel boiler, 1-2—second tube side of Krepp solid fuel boiler, 1-3—gas outlet of Krepp solid fuel boiler, 1-4—third tube side of Krepp solid fuel boiler, 1-5—fourth tube side of Krepp solid fuel boiler, 1-6—standby heating inlet, 2—steam turbine, 2-1—high-pressure steam inlet of steam turbine, 2-2—steam outlet at the tail of steam turbine, 3—gas turbine, 4—generator, 5—combustion chamber, 6—compressor, 6-1—shell side of compressor intercooler, 6-2—tube side of compressor intercooler, 7—turbine, 8—fan, 9—hydrogen combustion chamber, 10—hydrogen exchanger Heater, 11—Outer duct, 12—Steam recovery unit, 13—Condenser, 131—First tube side of condenser, 132—Second tube side of condenser, 14—Hydrogen nozzle, 15—Liquefaction unit, 16—Liquid hydrogen nozzle, 17—Metal hydride hydrogen pressurization unit, 171—Hydrogen absorption and heat release zone, 172—Hydrogen release and heat absorption zone, 18—Flue gas heat exchanger, 21—Multi-stage hydrogen expander, 22—Combined power unit, 23—Heat exchanger, 24—Evaporator, 25—Storage tank, 26—Silica heat exchanger, 27—Pressure hydrogen replacement center, 28—Liquid air nozzle, 29—Water pipe, 30—Air inlet, 31—Air outlet, 32—Nitrogen nozzle, 33—Nitrogen heat exchanger, 34—Coleip unit. Detailed Implementation

[0020] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0021] To illustrate the technical solution described in this application, specific embodiments are provided below. Example 1

[0022] Embodiment 1 of this application provides a combined cycle power generation system using Krupp solid fuel. For example... Figure 1 As shown, the combined cycle power generation system includes a Krupp solid fuel boiler 1, a hydrogen combustion chamber 9, an evaporator 24, a heat exchanger 23, a generator 4, and a Krupp waste heat recovery power generation unit. The Krupp waste heat recovery power generation unit mainly includes a Krupp unit 34, a multi-stage hydrogen expander 21, a hydrogen heat exchanger 10, a steam recovery unit 12, and a silica heat exchanger 26. The multi-stage hydrogen expander 21 and the generator 4 are coaxially arranged and drive the generator 4 to generate electricity.

[0023] Krupp solid fuel, abbreviated as Krupp, is composed of metal particles, catalysts, and combustion improvers. Its main component is metal particles, such as 75% ferrosilicon particles, or magnesium- or aluminum-containing metal particles. Krupp is made by pressing fine granular materials (nanoscale particle size), which are then cut into fine powder by a cutting tool before being fed into the combustion device. Because Krupp is pressed into rods, it has excellent explosion-proof properties. Furthermore, when not in use, Krupp can be stored under a nitrogen protective atmosphere or encased in insulating, fireproof, and waterproof packaging materials, ensuring absolute safety during storage. Alternatively, metal blocks (such as 75% ferrosilicon, magnesium- or aluminum-containing rod-shaped metal blocks) can be used directly as Krupp solid fuel, eliminating the need to process them into fine granules and then press them into rods; before use, the metal blocks are cut into fine powder by a cutting tool before being fed into the combustion device.

[0024] In the Krupp solid fuel boiler 1, high-temperature steam and high-temperature Krupp solid fuel (such as ferrosilicon) react to release heat and generate hydrogen. The heat from the reaction in the Krupp solid fuel boiler 1 can be used to preheat a portion of the hydrogen entering the multi-stage hydrogen expander 21. The hydrogen produced by the reaction between the high-temperature steam and the high-temperature Krupp solid fuel (such as ferrosilicon) in the Krupp solid fuel boiler 1 is supplied to the hydrogen combustion chamber 9 as fuel. The hydrogen combustion chamber 9 uses the hydrogen generated by the Krupp solid fuel boiler 1 to burn with combustion-supporting gas (such as air, pure oxygen, or oxygen-enriched gas), and uses the heat generated by combustion to heat a portion of the high-pressure hydrogen output from the Krupp unit 34. The heated high-pressure hydrogen then enters the multi-stage hydrogen expander 21 to perform work. The combustion flue gas (containing steam and nitrogen) discharged from the hydrogen combustion chamber 9 is cooled by waste heat recovery, and the steam is condensed and recovered. The non-condensable gases (mainly nitrogen) are sent to the storage tank 25 for storage.

[0025] The Krupp waste heat recovery power generation unit mainly utilizes the high-pressure hydrogen generated by the Krupp unit 34 to recover waste heat from various parts of the system, including flue gas waste heat, reaction heat from the hydrogen combustion chamber 9, sensible heat from silica and unreacted cocoa in the silica heat exchanger 26, and part of the reaction heat from the Krupp solid fuel boiler 1. After recovering the above waste heat, the high-pressure hydrogen with increased temperature is sent to the multi-stage hydrogen expander 21 for expansion and power generation. After expansion and power generation, the hydrogen with reduced temperature and pressure is sent back to the Krupp unit for hydrogen absorption and recycling.

[0026] The gas (mainly hydrogen) coming out of the gas outlet 1-3 of the Krupp solid fuel boiler 1 enters the hydrogen combustion chamber 9 after passing through the tube side of the heat exchanger 23. In the hydrogen combustion chamber 9, the combustion exhaust gas after the hydrogen gas and the auxiliary combustion gas are burned passes through the shell side of the evaporator 24 and the shell side of the steam recovery unit 12 to recover heat and condense and recover water vapor. The non-condensable gas enters the storage tank 25 for storage.

[0027] The Krepu solid fuel boiler 1 can use a space combustion method, employing metals (including but not limited to ferrosilicon) as fuel; or the Krepu solid fuel boiler 1 can be equipped with a molten pool, using a high-temperature molten pool to achieve the reaction between metals (including but not limited to ferrosilicon) and steam. Catalysts or flammable agents can be added to the Krepu solid fuel boiler 1 to promote metal combustion or reaction. When ferrosilicon is used as fuel, ferrosilicon and steam react in the Krepu solid fuel boiler 1 to produce H2 and silicon dioxide. H2 is discharged from the gas outlet 1-3 on the shell side of the Krepu solid fuel boiler 1 and then connected to the tube side of the heat exchanger 23 and the hydrogen combustion chamber 9.

[0028] for Figure 1 The combined cycle power generation system shown below operates as follows: The Krepp solid fuel boiler 1 uses metals (including but not limited to ferrosilicon) as fuel, referred to as Krepp solid fuel. Krepp solid fuel reacts with steam in the Krepp solid fuel boiler 1 to produce combustible gases (including but not limited to hydrogen) and metal oxides (including but not limited to silicon dioxide). The combustible gases generated in the Krepp solid fuel boiler 1 are cooled by the tube side of heat exchanger 23 and then sent to the hydrogen combustion chamber 9 as fuel. The reaction between Krepp solid fuel and steam in the Krepp solid fuel boiler 1 releases a large amount of heat, which can be used to preheat a portion of the hydrogen entering the multi-stage hydrogen expander 21. The Krepp unit 34 can absorb low-pressure hydrogen to produce high-pressure hydrogen. The high-pressure hydrogen produced by the Krepp unit 34 absorbs waste heat from various parts of the combined cycle power generation system and is then heated before being sent to the multi-stage hydrogen expander 21 to expand and perform work. After performing work, the cooled and depressurized hydrogen is returned to the Krepp unit 34 for hydrogen absorption and recycling. The multi-stage hydrogen expander 21 and generator 4 are coaxially connected, and the generator 4 drives the generator to generate electricity.

[0029] In Example 1, the externally sourced Cropp solid fuel (ferrosilicon with 75% silicon content) first exchanges heat with the 1280°C high-temperature solid products (silicon dioxide and unreacted cocoa) of Cropp solid fuel boiler 1 to raise its temperature to 1000°C. Then, it enters Cropp solid fuel boiler 1 together with 1000°C, 0.1MPa steam from the shell-side outlet of heat exchanger 23 to react. The reaction produces hydrogen gas at 1280°C and 0.1MPa, and solid products (silicon dioxide and unreacted cocoa) at 1280°C, releasing a large amount of heat. The 1280°C high-temperature solid products (silicon dioxide and unreacted cocoa) are then cooled by exchanging heat with the externally sourced Cropp solid fuel (ferrosilicon with 75% silicon content) before being sent to silicon dioxide heat exchanger 26 for further heat recovery and cooling to ambient temperature before being discharged. The large amount of heat released during the reaction of high-temperature steam and high-temperature Corelpur solid fuel is used to preheat a portion of the hydrogen entering the multi-stage hydrogen expander 21.

[0030] Hydrogen gas at 1280°C and 0.1 MPa, generated from combustion in the Krupp solid fuel boiler 1, is cooled to 105°C via heat exchanger 23 and then sent to hydrogen combustion chamber 9. Combustion air at 0.1 MPa and 20°C (excess coefficient 1.85) from the outside is also introduced into hydrogen combustion chamber 9. The 105°C hydrogen and 20°C combustion air (excess coefficient 1.85) combust in hydrogen combustion chamber 9 to generate flue gas at 1460.26°C. This 1460.26°C flue gas preheats a portion of the high-pressure hydrogen discharged from the Krupp unit 34 in hydrogen combustion chamber 9, then cools to 380°C. The 380°C flue gas first recovers heat through the shell side of evaporator 24, then enters the shell side of steam recovery unit 12 to condense and recover water vapor. Finally, the non-condensable gases (mainly nitrogen) are cooled to 20°C in steam recovery unit 12 and stored in storage tank 25.

[0031] The condensate outlet of steam recovery unit 12 receives water at 0.1 MPa and 99°C, which is then sent to the tube side of evaporator 24 to evaporate and generate steam at 0.1 MPa and 100°C. This steam at 0.1 MPa and 100°C is then heated to 1000°C by exchanging heat with hydrogen at 0.1 MPa and 1280°C at the inlet of heat exchanger 23 via the shell side, and then sent to the Krupp solid fuel boiler 1 for recycling.

[0032] The high-pressure hydrogen gas produced by the Krepton plant at 2.5 MPa and -2.8°C is divided into four parts. The first part is fed to the shell side of the hydrogen heat exchanger 10 and the third tube side 1-4 of the Krupp solid fuel boiler 1, where it absorbs heat and is heated to 400°C before entering the third-stage expansion inlet of the multi-stage hydrogen expander 21, where it performs work. The second part is fed to the shell side of the hydrogen heat exchanger 10 and the tube side of the hydrogen combustion chamber 9, where it absorbs heat and is heated to 400°C before entering the third-stage expansion inlet of the multi-stage hydrogen expander 21, where it performs work. The third part is fed to the tube side of the silica heat exchanger 26, where it absorbs heat and is heated to 92°C before entering the first-stage expansion inlet of the multi-stage hydrogen expander 21, where it performs work. The fourth part is fed to the tube side of the steam recovery unit 12, where it absorbs heat and is heated to 92°C before entering the first-stage expansion inlet of the multi-stage hydrogen expander 21, where it performs work. The hydrogen gas at 0.76 MPa and 207°C from the fourth-stage expansion outlet of the multi-stage hydrogen expander 21 is cooled to 2.2°C after passing through the tube side of the hydrogen heat exchanger 10. It is then mixed with the hydrogen gas at 0.76 MPa and -14.08°C from the second-stage expansion outlet of the multi-stage hydrogen expander 21. The mixed hydrogen gas at 0.76 MPa and -1.8°C is returned to the Krupp unit 34 for hydrogen absorption.

[0033] The combined cycle power generation system using Krupp solid fuel provided in Example 1 has a high thermal efficiency of not less than 90%.

[0034] The composition, structure and working principle of the Krep device 34 are described in the Chinese invention patent "A Hydrogen Power Generation System Utilizing Air Thermal Energy" (application number 2024101513107).

[0035] Example 2 For the Cropper solid fuel boiler 1, in addition to using steam to react with ferrosilicon, oxygen or air can also be used to react with Cropper solid fuel (such as ferrosilicon). In the combined cycle power generation system using Cropper solid fuel provided in Embodiment 2 of this application, oxygen and air are used instead of steam to react with Cropper solid fuel in the Cropper solid fuel boiler 1.

[0036] Figure 2 This illustrates a combined cycle power generation system that uses oxygen and ferrosilicon combustion to generate electricity in a Krupp solid fuel boiler 1. Figure 1 Compared to the combined cycle power generation system shown, Figure 2The combined cycle power generation system eliminates the need for hydrogen combustion chamber 9, evaporator 24, heat exchanger 23, and steam recovery unit 12 in the Cropp waste heat recovery power generation unit. Oxygen and ferrosilicon are burned in the Cropp solid fuel boiler 1, producing silica and a large amount of heat. The high-pressure hydrogen generated by the Cropp unit 34 recovers the sensible heat of silica and unreacted Cropped in the silica heat exchanger 26, as well as the heat of combustion from the Cropp solid fuel boiler 1. The high-pressure hydrogen, now at a higher temperature after recovering the waste heat and heat of combustion, is sent to a multi-stage hydrogen expander 21 for expansion and power generation. The hydrogen, after expansion and depressurization, is then returned to the Cropp unit 34 for hydrogen absorption and recycling.

[0037] for Figure 2 The combined cycle power generation system shown below operates as follows: The CREP solid fuel boiler 1 uses metals (including but not limited to ferrosilicon) as fuel, referred to as CREP solid fuel. The CREP solid fuel reacts with oxygen in the CREP solid fuel boiler 1 to produce metal oxides (including but not limited to silicon dioxide). The reaction between the CREP solid fuel and oxygen in the CREP solid fuel boiler 1 releases a large amount of heat, which can be used to preheat a portion of the hydrogen entering the multi-stage hydrogen expander 21. The CREP unit 34 absorbs low-pressure hydrogen to produce high-pressure hydrogen. The high-pressure hydrogen produced by the CREP unit 34 absorbs the reaction heat from the CREP solid fuel boiler 1 and the waste heat from the combined cycle power generation system, and after being heated, it is sent to the multi-stage hydrogen expander 21 to expand and perform work. After performing work, the cooled and depressurized hydrogen is returned to the CREP unit 34 for hydrogen absorption and recycling. The multi-stage hydrogen expander 21 is coaxially connected to the generator 4 and drives the generator 4 to generate electricity.

[0038] exist Figure 2 In the combined cycle power generation system shown, the externally sourced Cropp solid fuel (ferrosilicon with 75% silicon content) first exchanges heat with the 1280°C high-temperature solid products (silicon dioxide and unreacted cocoa) of Cropp solid fuel boiler 1, raising its temperature to 1000°C. Then, it enters Cropp solid fuel boiler 1 along with room-temperature oxygen to react. The reaction produces 1280°C solid products (silicon dioxide and unreacted cocoa), releasing a large amount of heat. The 1280°C high-temperature solid products (silicon dioxide and unreacted cocoa) are then cooled by exchanging heat with the externally sourced Cropp solid fuel (ferrosilicon with 75% silicon content) before being sent to a silicon dioxide heat exchanger 26 for further heat recovery, reducing the temperature to room temperature before discharge. The large amount of heat released during the reaction of oxygen and high-temperature Cropp solid fuel is used to preheat a portion of the hydrogen entering the multi-stage hydrogen expander 21.

[0039] The high-pressure hydrogen gas (2.5 MPa, -2.8°C) generated by the Krupp unit is divided into two parts. The first part passes sequentially through the shell side of the hydrogen heat exchanger 10 and the third tube side (1-4) of the Krupp solid fuel boiler 1, absorbing heat and heating to 400°C before entering the third-stage expansion inlet of the multi-stage hydrogen expander 21. After performing work in the multi-stage hydrogen expander 21, it is discharged from the fourth-stage expansion outlet of the multi-stage hydrogen expander 21. The second part is sent to the tube side of the silica heat exchanger 26, absorbing heat and heating to 92°C before entering the first-stage expansion inlet of the multi-stage hydrogen expander 21. After performing work in the multi-stage hydrogen expander 21, it is discharged from the second-stage expansion outlet of the multi-stage hydrogen expander 21. The hydrogen gas at 0.76 MPa and 207°C from the fourth-stage expansion outlet of the multi-stage hydrogen expander 21 is cooled to 2.2°C after passing through the tube side of the hydrogen heat exchanger 10. It is then mixed with the hydrogen gas at 0.76 MPa and -14.08°C from the second-stage expansion outlet of the multi-stage hydrogen expander 21. The mixed hydrogen gas at 0.76 MPa and -1.8°C is returned to the Krupp unit 34 for hydrogen absorption.

[0040] Figure 2 The provided combined cycle power generation system using Krupp solid fuel has a high thermal efficiency of no less than 90%.

[0041] Figure 3 This illustrates a combined cycle power generation system that uses air and ferrosilicon combustion to generate electricity in a Krupp solid fuel boiler 1. Figure 1 Compared to the combined cycle power generation system shown, Figure 3 The combined cycle power generation system eliminates the hydrogen combustion chamber 9, evaporator 24, heat exchanger 23, and steam recovery unit 12 in the Krupp waste heat recovery power generation unit; a flue gas heat exchanger 18 is added. Air and ferrosilicon are burned in the Krupp solid fuel boiler 1, generating silica, flue gas (mainly nitrogen), and a large amount of heat. The high-pressure hydrogen generated by the Krupp unit 34 recovers the sensible heat of silica and unreacted Krupp in the silica heat exchanger 26, the waste heat of the flue gas, and the combustion reaction heat of the Krupp solid fuel boiler 1; the high-pressure hydrogen, after recovering the above waste heat and combustion reaction heat, is sent to a multi-stage hydrogen expander 21 for expansion and power generation; the hydrogen, after expansion and depressurization, is then returned to the Krupp unit 34 for hydrogen absorption and recycling.

[0042] for Figure 3 The combined cycle power generation system shown below operates as follows: The CREP solid fuel boiler 1 uses metals (including but not limited to ferrosilicon) as fuel, referred to as CREP solid fuel. The CREP solid fuel reacts with air in the CREP solid fuel boiler 1 to produce metal oxides (including but not limited to silicon dioxide). The reaction between the CREP solid fuel and air in the CREP solid fuel boiler 1 releases a large amount of heat, which can be used to preheat a portion of the hydrogen entering the multi-stage hydrogen expander 21. The CREP unit 34 absorbs low-pressure hydrogen to produce high-pressure hydrogen. The high-pressure hydrogen produced by the CREP unit 34 absorbs the reaction heat from the CREP solid fuel boiler 1 and the waste heat from the combined cycle power generation system, and is then sent to the multi-stage hydrogen expander 21 to expand and perform work. After performing work, the cooled and depressurized hydrogen is returned to the CREP unit 34 for hydrogen absorption and recycling. The multi-stage hydrogen expander 21 and generator 4 are coaxially connected, and the generator 4 drives the generator to generate electricity.

[0043] exist Figure 3In the combined cycle power generation system shown, the externally sourced Cropp solid fuel (ferrosilicon with 75% silicon content) first exchanges heat with the 1280°C high-temperature solid products (silicon dioxide and unreacted cocoa) of Cropp solid fuel boiler 1, raising its temperature to 1000°C. Then, it enters Cropp solid fuel boiler 1 along with ambient air for reaction. The reaction produces 1280°C solid products (silicon dioxide and unreacted cocoa) and flue gas, releasing a large amount of heat. The 1280°C high-temperature solid products (silicon dioxide and unreacted cocoa) are then cooled by exchanging heat with the externally sourced Cropp solid fuel (ferrosilicon with 75% silicon content) before being sent to a silicon dioxide heat exchanger 26 for further heat recovery and cooling to ambient temperature before being discharged. The large amount of heat released during the reaction between air and the high-temperature Cropp solid fuel is used to preheat a portion of the hydrogen entering the multi-stage hydrogen expander 21. The 1280°C flue gas (mainly nitrogen) formed after the reaction of air and high-temperature Cropped solid fuel is cooled to 20°C by waste heat recovery in the shell side of flue gas heat exchanger 18 before being sent to storage tank 25. The 2.5MPa, -2.8°C high-pressure hydrogen produced by the Cropped unit is divided into three parts. The first part passes sequentially through the shell side of hydrogen heat exchanger 10 and the third tube side 1-4 of Cropped solid fuel boiler 1, absorbing heat and heating to 400°C before entering the third-stage expansion inlet of multi-stage hydrogen expander 21. After performing work in multi-stage hydrogen expander 21, it exits from the fourth-stage expansion outlet of multi-stage hydrogen expander 21. The second part is sent to the tube side of silica heat exchanger 26, absorbing heat and heating to 92°C before entering the first-stage expansion inlet of multi-stage hydrogen expander 21. After performing work in multi-stage hydrogen expander 21, it exits from the second-stage expansion outlet of multi-stage hydrogen expander 21. The third part is sent to the tube side of the flue gas heat exchanger 18, where it absorbs heat and is heated to 92°C before entering the first-stage expansion inlet of the multi-stage hydrogen expander 21. After doing work in the multi-stage hydrogen expander 21, it is discharged from the second-stage expansion outlet of the multi-stage hydrogen expander 21. The 0.76MPa, 207°C hydrogen gas at the fourth-stage expansion outlet of the multi-stage hydrogen expander 21 is cooled to 2.2°C after passing through the tube side of the hydrogen heat exchanger 10. It mixes with the 0.76MPa, -14.08°C hydrogen gas at the second-stage expansion outlet of the multi-stage hydrogen expander 21. The mixed 0.76MPa, -1.8°C hydrogen gas is returned to the Krupp unit 34 for hydrogen absorption.

[0044] Figure 3 The provided combined cycle power generation system using Krupp solid fuel has a high thermal efficiency of no less than 90%.

[0045] Example 3 Embodiment 3 of this application provides a combined cycle power system using Cropp solid fuel. For example... Figure 4As shown, the combined cycle power system includes a Krupp solid fuel boiler 1, a generator 4, a gas turbine power generation unit, and a Krupp waste heat recovery power generation unit. The gas turbine power generation unit mainly includes a metal hydride hydrogen pressurization unit 17, a gas turbine 3, an evaporator 24, and a heat exchanger 23. The Krupp waste heat recovery power generation unit mainly includes a Krupp unit 34, a multi-stage hydrogen expander 21, a steam recovery unit 12, and a silica heat exchanger 26.

[0046] The gas turbine 3 includes a compressor 6, a combustion chamber 5, and a turbine 7. The compressor 6 compresses the combustion gas to a preset pressure and delivers the compressed combustion gas to the combustion chamber 5. A fan 8 is located in front of the compressor 6 of the gas turbine 3. An outer bypass duct 11 is provided outside the combined power unit 22, which consists of the electric motor 4, the multi-stage hydrogen expander 21, and the gas turbine 3; an air inlet 30 is provided on the outer bypass duct 11, and the air inlet 30 is located in front of the fan 8.

[0047] The gas turbine 3 and the multi-stage hydrogen expander 21 are arranged coaxially in sequence to form a combined power unit, which is mainly used to drive the fan 8 to compress the outside air. The compressed outside air is ejected through the bypass duct 11 to provide thrust. The combined power unit can also be used to drive the generator 4 to generate electricity.

[0048] Krupp solid fuel, abbreviated as Krupp, is composed of metal particles, catalysts, and combustion improvers. Its main component is metal particles, such as 75% ferrosilicon particles, magnesium-containing or aluminum-containing metal particles. Krupp is made by pressing fine granular materials (nanoscale particle size), which are then cut into fine powder by a cutting tool before being fed into the combustion device. Because Krupp is pressed into rod shape, it has excellent explosion-proof properties; furthermore, when not in use, Krupp is stored under a nitrogen protective atmosphere or encased in insulating, fireproof, and waterproof packaging materials, ensuring its absolute safety during storage.

[0049] In the Trapper solid fuel boiler 1, high-temperature steam and high-temperature Trapper solid fuel (such as ferrosilicon) react to release heat and generate hydrogen. The heat from this reaction in the Trapper solid fuel boiler 1 can be used to preheat a portion of the hydrogen entering the multi-stage hydrogen expander 21 and to reheat the hydrogen at the first-stage expansion outlet of the multi-stage hydrogen expander 21; it can also be used by the metal hydride hydrogen pressurization unit 17 for hydrogen release and heat absorption. The hydrogen produced by the reaction between the high-temperature steam and the high-temperature Trapper solid fuel (such as ferrosilicon) in the Trapper solid fuel boiler 1 is supplied to the gas turbine power generation unit as fuel.

[0050] The gas turbine power generation unit mainly utilizes hydrogen produced by the Krupp solid fuel boiler 1 to burn under high pressure, generating high-temperature and high-pressure flue gas to drive the turbine 7 to perform work. After the flue gas has performed work, the water vapor in it is condensed and recovered after waste heat recovery, while the non-condensable gases (mainly nitrogen) are sent to the storage tank 25 for storage.

[0051] The Clearpool waste heat recovery power generation unit mainly utilizes the high-pressure hydrogen generated by the Clearpool unit 34 to recover waste heat from various parts of the system, including part of the reaction heat of the Clearpool solid fuel boiler 1, the waste heat of the intercooler of the compressor 6, the sensible heat of silica and unreacted koji in the silica heat exchanger 26, the hydrogen absorption reaction heat of the metal hydride hydrogen pressurization unit 17, and the waste heat of the flue gas. After recovering the above waste heat, the high-pressure hydrogen with increased temperature is sent to the multi-stage hydrogen expander 21 for expansion and power generation. After expansion and power generation, the hydrogen is cooled and depressurized and then sent back to the Clearpool unit for hydrogen absorption and recycling.

[0052] The gas (mainly hydrogen) from the gas outlets 1-3 of the Krupp solid fuel boiler 1 enters the metal hydride hydrogen pressurization unit 17 after passing through the tube side of the heat exchanger 23. After being pressurized by the metal hydride hydrogen pressurization unit 17, it is connected to the combustion chamber 5 of the gas turbine 3. In embodiment 4, the combustion chamber 5 of the gas turbine 3 is equipped with a hydrogen nozzle 14, and the gas outlets 1-3 on the shell side of the Krupp solid fuel boiler 1 are connected to the hydrogen nozzle 14 through the tube side of the heat exchanger 23 and the metal hydride hydrogen pressurization unit 17.

[0053] The flue gas discharged from the combustion exhaust outlet of the turbine 7 in the gas turbine 3 recovers heat and condenses and recovers water vapor through the shell side of the evaporator 24 and the shell side of the steam recovery unit 12. The non-condensable gas then enters the storage tank 25 for storage.

[0054] The Krepu solid fuel boiler 1 can use a space combustion method, employing metals (including but not limited to ferrosilicon) as fuel; or the Krepu solid fuel boiler 1 can be equipped with a molten pool, using a high-temperature molten pool to achieve the reaction between metals (including but not limited to ferrosilicon) and steam. Catalysts or flammable agents can be added to the Krepu solid fuel boiler 1 to promote metal combustion or reaction. When ferrosilicon is used as fuel, ferrosilicon and steam react in the Krepu solid fuel boiler 1 to produce H2 and silicon dioxide. H2 is discharged from the gas outlet 1-3 on the shell side of the Krepu solid fuel boiler 1, and then connected to the hydrogen nozzle 14 via the tube side of the heat exchanger 23 and the metal hydride hydrogen pressurization unit 17.

[0055] for Figure 4 The combined cycle power system shown below operates as follows: The CREP solid fuel boiler 1 uses metals (including but not limited to ferrosilicon) as fuel, referred to as CREP solid fuel. CREP solid fuel reacts with steam in the CREP solid fuel boiler 1 to produce combustible gases (including but not limited to hydrogen) and metal oxides (including but not limited to silicon dioxide). The combustible gases generated in the CREP solid fuel boiler 1 are cooled by the tube side of heat exchanger 23 and pressurized by the metal hydride hydrogen pressurization unit 17 before being sent to the gas turbine 3 as fuel. The reaction between the CREP solid fuel and steam in the CREP solid fuel boiler 1 releases a large amount of heat, which can be used to preheat part of the hydrogen entering the multi-stage hydrogen expander 21 and to reheat the hydrogen at the first-stage expansion outlet of the multi-stage hydrogen expander 21; it can also be used by the metal hydride hydrogen pressurization unit 17 for hydrogen release and heat absorption. The Cropper unit 34 absorbs low-pressure hydrogen and produces high-pressure hydrogen. The high-pressure hydrogen produced by the Cropper unit 34 absorbs waste heat from various parts of the combined cycle power generation system, then is sent to the multi-stage hydrogen expander 21 to expand and perform work. After performing work, the cooled and depressurized hydrogen is returned to the Cropper unit 34 for hydrogen absorption and recycling. The gas turbine 3 and the multi-stage hydrogen expander 21 are coaxially connected, together driving the generator 4 to generate electricity.

[0056] In Example 3, the Krupp solid fuel (ferrosilicon with 75% silicon content) from the outside first exchanges heat with the high-temperature solid products (silicon dioxide and unreacted coco) of the Krupp solid fuel boiler 1 at 1280°C to raise its temperature to 1000°C. Then, it enters the Krupp solid fuel boiler 1 together with 1000°C, 0.1MPa steam from the shell-side outlet of heat exchanger 23 to react. The reaction produces hydrogen gas at 1280°C, 0.1MPa and solid products (silicon dioxide and unreacted coco) at 1280°C, releasing a large amount of heat. The 1280°C, 0.1MPa hydrogen gas is cooled to 105°C by heat exchange in the tube side of heat exchanger 23 and then sent to the metal hydride hydrogen pressurization unit 17 for hydrogen absorption. The 1280℃ high-temperature solid products (silicon dioxide and unreacted Kroc) are first cooled by heat exchange with external Kropp solid fuel (ferrosilicon with 75% silicon content), and then sent to the silicon dioxide heat exchanger 26 for further recovery of residual heat and discharge at room temperature. The large amount of heat released during the reaction of high-temperature steam and high-temperature Kropp solid fuel is mostly used to preheat a portion of the hydrogen entering the multi-stage hydrogen expander 21 and to reheat the hydrogen at the first-stage expansion outlet of the multi-stage hydrogen expander 21; a small portion is used for hydrogen release and heat absorption in the metal hydride hydrogen pressurization unit 17.

[0057] The metal hydrogen storage material filled in the metal hydride hydrogen pressurization unit 17 first absorbs hydrogen gas at 105°C and 0.1MPa from the tube-side outlet of the heat exchanger 23, simultaneously releasing the heat of hydrogen absorption. Then, the heat exchange medium from the outlet of the heat exchange medium jacket of the metal hydride hydrogen pressurization unit 17 enters the inlet of the second tube side 1-2 of the Cropper solid fuel boiler 1. After absorbing heat and heating up, it is returned from the outlet of the second tube side 1-2 of the Cropper solid fuel boiler 1 to the inlet of the heat exchange medium jacket of the metal hydride hydrogen pressurization unit 17, transferring heat to the fully hydrogen-absorbed metal hydrogen storage material in the metal hydride hydrogen pressurization unit 17 for its hydrogen release and heat absorption, releasing hydrogen gas at 2.5MPa and 291.1°C. This 2.5MPa, 291.1°C hydrogen gas is then sent to the combustion chamber 5 of the gas turbine 3 as fuel.

[0058] Combustion air (0.1 MPa, 20°C, excess coefficient 1.85) from the outside is first compressed to 0.5 MPa and 190°C by compressor 6; then cooled to 20°C by intercooler shell side 6-1; and then sent back to compressor 6 for compression to 2.5 MPa and 190.8°C before being sent into combustion chamber 5 of gas turbine 3. Hydrogen gas (2.5 MPa, 291.1°C) and combustion air (2.5 MPa, 190.8°C, excess coefficient 1.85) combust in combustion chamber 5 to generate flue gas (2.5 MPa, 1602.2°C). Flue gas at 2.5 MPa and 1602.2℃ is fed into turbine 7 for expansion and work. After expansion and work, flue gas at 0.1 MPa and 626.7℃ first recovers heat through the shell side of evaporator 24, and then is sent to the shell side of steam recovery unit 12 to condense and recover water vapor in the flue gas. Finally, non-condensable gas (mainly nitrogen) is cooled to 20℃ in steam recovery unit 12 and stored in storage tank 25.

[0059] The condensate outlet of steam recovery unit 12 receives water at 0.1 MPa and 99°C, which is then sent to the tube side of evaporator 24 to evaporate and generate steam at 0.1 MPa and 100°C. This steam at 0.1 MPa and 100°C is then heated to 1000°C by exchanging heat with hydrogen at 0.1 MPa and 1280°C at the inlet of heat exchanger 23 via the shell side, and then sent to the Krupp solid fuel boiler 1 for recycling.

[0060] The high-pressure hydrogen gas (2.5 MPa, -2.8°C) generated by the release of hydrogen from the Cropp unit is divided into five parts, which are respectively sent to the third tube pass 1-4 of the Cropp solid fuel boiler 1, the intercooler tube pass 6-2 of the compressor 6, the tube pass of the silica heat exchanger 26, the heat exchange medium jacket of the metal hydride hydrogen pressurization unit 17 (hydrogen absorption and heat release zone), and the tube pass of the steam recovery unit 12. After absorbing heat and being heated to 85°C, it enters the inlet of the multi-stage hydrogen expander 21. The hydrogen gas at the first expansion outlet of the multi-stage hydrogen expander 21 (1.85 MPa, 55.5°C) passes through the fourth tube pass 1-5 of the Cropp solid fuel boiler 1, absorbs heat, is reheated to 77.5°C, and then sent back to the second expansion inlet of the multi-stage hydrogen expander 21. The hydrogen gas at the fourth expansion outlet of the multi-stage hydrogen expander 21 (0.76 MPa, -1.8°C) is sent back to the Cropp unit 34 for hydrogen absorption.

[0061] The combined cycle power system of the Krupp solid fuel gas turbine and Krupp unit provided in Example 3 has a high thermal efficiency of not less than 90%.

[0062] The composition, structure and working principle of the Krep device 34 are described in the Chinese invention patent "A Hydrogen Power Generation System Utilizing Air Thermal Energy" (application number 2024101513107). Figure 7 The structure of the metal hydride hydrogen pressurization unit 17 is shown. For the specific structure of the metal hydride hydrogen pressurization unit 17, please refer to the description in Chinese invention patent application "Material Rotation Mechanism" (application number 2024109710739). Figure 7 As shown, the metal hydride hydrogen pressurization unit 17 is divided into a hydrogen absorption and heat release zone 171 and a hydrogen release and heat absorption zone 172. The metal hydride hydrogen pressurization unit 17 is filled with a metallic hydrogen storage material. This material absorbs low-pressure hydrogen at a relatively low temperature. The fully absorbed hydrogen material is then heated to a high temperature and absorbs heat to release high-pressure hydrogen. The metal hydride hydrogen pressurization unit 17 can be made of copper or carbon fiber with high heat transfer efficiency. When using carbon fiber, care must be taken to select a suitable heat transfer direction. In the metal hydride hydrogen pressurization unit 17, the heat exchange medium can be either a gas or a liquid.

[0063] Example 4 Embodiment 4 of this application provides a combined cycle power generation system using a Krupp solid fuel gas turbine and a Krupp unit. For example... Figure 5As shown, the combined cycle power generation system includes a gas turbine power generation unit and a Krupp waste heat recovery power generation unit. The gas turbine power generation unit mainly includes a Krupp solid fuel boiler 1, a metal hydride hydrogen pressurization unit 17, a gas turbine 3, an evaporator 24, and a heat exchanger 23; the Krupp waste heat recovery power generation unit mainly includes a Krupp unit 34, a multi-stage hydrogen expander 21, a steam recovery unit 12, and a silica heat exchanger 26. The multi-stage hydrogen expander 21 and the gas turbine 3 are coaxially integrated in sequence to form a combined power unit, driving a generator 4 to generate electricity. The gas turbine 3 includes a compressor 6, a combustion chamber 5, and a turbine 7. The compressor 6 is used to compress the combustion gas to a preset pressure and deliver the compressed combustion gas to the combustion chamber 5.

[0064] Krupp solid fuel, abbreviated as Krupp, is composed of metal particles, catalysts, and combustion improvers. Its main component is metal particles, such as 75% ferrosilicon particles, magnesium-containing or aluminum-containing metal particles. Krupp is made by pressing fine granular materials (nanoscale particle size), which are then cut into fine powder by a cutting tool before being fed into the combustion device. Because Krupp is pressed into rod shape, it has excellent explosion-proof properties; furthermore, when not in use, Krupp is stored under a nitrogen protective atmosphere or encased in insulating, fireproof, and waterproof packaging materials, ensuring its absolute safety during storage.

[0065] In the Trapper solid fuel boiler 1, high-temperature steam and high-temperature Trapper solid fuel (such as ferrosilicon) react to release heat and generate hydrogen. The heat from this reaction in the Trapper solid fuel boiler 1 can be used to preheat a portion of the hydrogen entering the multi-stage hydrogen expander 21 and to reheat the hydrogen at the first-stage expansion outlet of the multi-stage hydrogen expander 21; it can also be used by the metal hydride hydrogen pressurization unit 17 for hydrogen release and heat absorption. The hydrogen produced by the reaction between the high-temperature steam and the high-temperature Trapper solid fuel (such as ferrosilicon) in the Trapper solid fuel boiler 1 is supplied to the gas turbine power generation unit as fuel.

[0066] The gas turbine power generation unit mainly utilizes hydrogen produced by the Krupp solid fuel boiler 1 to burn under high pressure, generating high-temperature and high-pressure flue gas to drive the turbine 7 to perform work. After the flue gas has performed work, the water vapor in it is condensed and recovered after waste heat recovery, while the non-condensable gases (mainly nitrogen) are sent to the storage tank 25 for storage.

[0067] The Krepp waste heat recovery power generation unit mainly utilizes the high-pressure hydrogen generated by the Krepp unit 34 to recover waste heat from various parts of the system, including flue gas waste heat, part of the reaction heat from the Krepp solid fuel boiler 1, the hydrogen absorption reaction heat from the metal hydride hydrogen pressurization unit 17, the waste heat from the intercooler of the compressor 6, and the sensible heat from silica and unreacted Krepp in the silica heat exchanger 26. After recovering the above waste heat, the high-pressure hydrogen with increased temperature is sent to the multi-stage hydrogen expander 21 for expansion and power generation. After expansion and power generation, the hydrogen is cooled and depressurized and then sent back to the Krepp unit for hydrogen absorption and recycling.

[0068] The gas (mainly hydrogen) from the gas outlets 1-3 of the Krupp solid fuel boiler 1 enters the metal hydride hydrogen pressurization unit 17 after passing through the tube side of the heat exchanger 23. After being pressurized by the metal hydride hydrogen pressurization unit 17, it is connected to the combustion chamber 5 of the gas turbine 3. In embodiment 4, the combustion chamber 5 of the gas turbine 3 is equipped with a hydrogen nozzle 14, and the gas outlets 1-3 on the shell side of the Krupp solid fuel boiler 1 are connected to the hydrogen nozzle 14 through the tube side of the heat exchanger 23 and the metal hydride hydrogen pressurization unit 17.

[0069] The flue gas discharged from the combustion exhaust outlet of the turbine 7 in the gas turbine 3 recovers heat and condenses and recovers water vapor through the shell side of the evaporator 24 and the shell side of the steam recovery unit 12. The non-condensable gas then enters the storage tank 25 for storage.

[0070] The Krepu solid fuel boiler 1 can use a space combustion method, employing metals (including but not limited to ferrosilicon) as fuel; or the Krepu solid fuel boiler 1 can be equipped with a molten pool, using a high-temperature molten pool to achieve the reaction between metals (including but not limited to ferrosilicon) and steam. Catalysts or flammable agents can be added to the Krepu solid fuel boiler 1 to promote metal combustion or reaction. When ferrosilicon is used as fuel, ferrosilicon and steam react in the Krepu solid fuel boiler 1 to produce H2 and silicon dioxide. H2 is discharged from the gas outlet 1-3 on the shell side of the Krepu solid fuel boiler 1, and then connected to the hydrogen nozzle 14 via the tube side of the heat exchanger 23 and the metal hydride hydrogen pressurization unit 17.

[0071] for Figure 5 The combined cycle power generation system shown below operates as follows: The CREP solid fuel boiler 1 uses metals (including but not limited to ferrosilicon) as fuel, referred to as CREP solid fuel. CREP solid fuel reacts with steam in the CREP solid fuel boiler 1 to produce combustible gases (including but not limited to hydrogen) and metal oxides (including but not limited to silicon dioxide). The combustible gases generated in the CREP solid fuel boiler 1 are cooled by the tube side of heat exchanger 23 and pressurized by the metal hydride hydrogen pressurization unit 17 before being sent to the gas turbine 3 as fuel. The reaction between the CREP solid fuel and steam in the CREP solid fuel boiler 1 releases a large amount of heat, which can be used to preheat part of the hydrogen entering the multi-stage hydrogen expander 21 and to reheat the hydrogen at the first-stage expansion outlet of the multi-stage hydrogen expander 21; it can also be used by the metal hydride hydrogen pressurization unit 17 for hydrogen release and heat absorption. The Cropper unit 34 absorbs low-pressure hydrogen and produces high-pressure hydrogen. The high-pressure hydrogen produced by the Cropper unit 34 absorbs waste heat from various parts of the combined cycle power generation system, then is sent to the multi-stage hydrogen expander 21 to expand and perform work. After performing work, the cooled and depressurized hydrogen is returned to the Cropper unit 34 for hydrogen absorption and recycling. The gas turbine 3 and the multi-stage hydrogen expander 21 are coaxially connected, together driving the generator 4 to generate electricity.

[0072] In Example 4, the Krupp solid fuel (ferrosilicon with 75% silicon content) from the outside first exchanges heat with the high-temperature solid products (silicon dioxide and unreacted coco) of the Krupp solid fuel boiler 1 at 1280°C to raise its temperature to 1000°C. Then, it enters the Krupp solid fuel boiler 1 together with 1000°C, 0.1MPa steam from the shell-side outlet of heat exchanger 23 to react. The reaction produces hydrogen gas at 1280°C, 0.1MPa and solid products (silicon dioxide and unreacted coco) at 1280°C, releasing a large amount of heat. The 1280°C, 0.1MPa hydrogen gas is cooled to 105°C by heat exchange in the tube side of heat exchanger 23 and then sent to the metal hydride hydrogen pressurization unit 17 for hydrogen absorption. The 1280℃ high-temperature solid products (silicon dioxide and unreacted Kroc) are first cooled by heat exchange with external Kropp solid fuel (ferrosilicon with 75% silicon content), and then sent to the silicon dioxide heat exchanger 26 for further recovery of residual heat and discharge at room temperature. The large amount of heat released during the reaction of high-temperature steam and high-temperature Kropp solid fuel is mostly used to preheat a portion of the hydrogen entering the multi-stage hydrogen expander 21 and to reheat the hydrogen at the first-stage expansion outlet of the multi-stage hydrogen expander 21; a small portion is used for hydrogen release and heat absorption in the metal hydride hydrogen pressurization unit 17.

[0073] The metal hydrogen storage material filled in the metal hydride hydrogen pressurization unit 17 first absorbs hydrogen gas at 105°C and 0.1MPa from the tube-side outlet of the heat exchanger 23, simultaneously releasing the heat of hydrogen absorption. Then, the heat exchange medium from the outlet of the heat exchange medium jacket of the metal hydride hydrogen pressurization unit 17 enters the inlet of the second tube side 1-2 of the Cropper solid fuel boiler 1. After absorbing heat and heating up, it is returned from the outlet of the second tube side 1-2 of the Cropper solid fuel boiler 1 to the inlet of the heat exchange medium jacket of the metal hydride hydrogen pressurization unit 17, transferring heat to the fully hydrogen-absorbed metal hydrogen storage material in the metal hydride hydrogen pressurization unit 17 for its hydrogen release and heat absorption, releasing hydrogen gas at 2.5MPa and 291.1°C. This 2.5MPa, 291.1°C hydrogen gas is then sent to the combustion chamber 5 of the gas turbine 3 as fuel.

[0074] Combustion air (0.1 MPa, 20°C, excess coefficient 1.85) from the outside is first compressed to 0.5 MPa and 190°C by compressor 6; then cooled to 20°C by intercooler shell side 6-1; and then sent back to compressor 6 for compression to 2.5 MPa and 190.8°C before being sent into combustion chamber 5 of gas turbine 3. Hydrogen gas (2.5 MPa, 291.1°C) and combustion air (2.5 MPa, 190.8°C, excess coefficient 1.85) combust in combustion chamber 5 to generate flue gas (2.5 MPa, 1602.2°C). Flue gas at 2.5 MPa and 1603.1℃ is fed into turbine 7 to expand and do work. After expansion and work, flue gas at 0.1 MPa and 626.7℃ first recovers heat through the shell side of evaporator 24, and then is sent to the shell side of steam recovery unit 12 to condense and recover water vapor in the flue gas. Finally, non-condensable gas (mainly nitrogen) is cooled to 20℃ in steam recovery unit 12 and stored in storage tank 25.

[0075] The condensate outlet of steam recovery unit 12 receives water at 0.1 MPa and 99°C, which is then sent to the tube side of evaporator 24 to evaporate and generate steam at 0.1 MPa and 100°C. This steam at 0.1 MPa and 100°C is then heated to 1000°C by exchanging heat with hydrogen at 0.1 MPa and 1280°C at the inlet of heat exchanger 23 via the shell side, and then sent to the Krupp solid fuel boiler 1 for recycling.

[0076] The high-pressure hydrogen gas (2.5 MPa, -2.8°C) generated by the release of hydrogen from the Cropped unit is divided into five parts, which are respectively sent to the third tube pass 1-4 of the Cropped solid fuel boiler 1, the tube pass of the steam recovery unit 12, the intercooler tube pass 6-2 of the compressor 6, the tube pass of the silica heat exchanger 26, and the heat exchange medium jacket of the metal hydride hydrogen pressurization unit 17 (hydrogen absorption and heat release zone). After absorbing heat and being heated to 85°C, it enters the inlet of the multi-stage hydrogen expander 21. The hydrogen gas at the first expansion outlet of the multi-stage hydrogen expander 21 (1.85 MPa, 55.5°C) passes through the fourth tube pass 1-5 of the Cropped solid fuel boiler 1, absorbs heat, is reheated to 77.5°C, and is then sent back to the second expansion inlet of the multi-stage hydrogen expander 21. The hydrogen gas at the fourth expansion outlet of the multi-stage hydrogen expander 21 (0.76 MPa, -1.8°C) is sent back to the Cropped unit 34 for hydrogen absorption.

[0077] The combined cycle power generation system of the Krupp solid fuel gas turbine and Krupp unit provided in Example 4 has a high thermal efficiency of not less than 90%.

[0078] The composition, structure and working principle of the Krep device 34 are described in the Chinese invention patent "A Hydrogen Power Generation System Utilizing Air Thermal Energy" (application number 2024101513107). Figure 7The structure of the metal hydride hydrogen pressurization unit 17 is shown. For the specific structure of the metal hydride hydrogen pressurization unit 17, please refer to the description in Chinese invention patent application "Material Rotation Mechanism" (application number 2024109710739). Figure 7 As shown, the metal hydride hydrogen pressurization unit 17 is divided into a hydrogen absorption and heat release zone 171 and a hydrogen release and heat absorption zone 172. The metal hydride hydrogen pressurization unit 17 is filled with a metallic hydrogen storage material. This material absorbs low-pressure hydrogen at a relatively low temperature. The fully absorbed hydrogen material is then heated to a high temperature and absorbs heat to release high-pressure hydrogen. The metal hydride hydrogen pressurization unit 17 can be made of copper or carbon fiber with high heat transfer efficiency. When using carbon fiber, care must be taken to select a suitable heat transfer direction. In the metal hydride hydrogen pressurization unit 17, the heat exchange medium can be either a gas or a liquid.

[0079] In Embodiment 4 of this application, the hydrogen absorption and desorption cycles of the metal hydrogen storage material in the metal hydride hydrogen pressurization unit 17 are consistent. In practical applications, the hydrogen absorption and desorption cycles of the metal hydrogen storage material may or may not be consistent. When the hydrogen absorption cycle of the metal hydrogen storage material located in the hydrogen absorption and exothermic zone ends, the portion of the metal hydrogen storage material is transferred to the hydrogen desorption and exothermic zone for a desorption cycle via a rotating device; when the hydrogen desorption cycle of the metal hydrogen storage material located in the hydrogen desorption and exothermic zone ends, the portion of the metal hydrogen storage material is transferred to the hydrogen absorption and exothermic zone for a hydrogen absorption cycle via a rotating device. The two portions of metal hydrogen storage material in the metal hydride hydrogen pressurization unit 17 perform hydrogen absorption / desorption operations in this cyclical manner. For temperature-negatively correlated metal hydrogen storage materials (defined as materials that absorb low-pressure hydrogen and release heat at low temperatures, and absorb heat and release high-pressure hydrogen at high temperatures): The portion of the metal hydrogen storage material that has just been transferred to the hydrogen absorption and heat release zone is at a low temperature. At this time, hydrogen from each storage chamber of the pressure hydrogen replacement center 27 is introduced sequentially from low pressure to high pressure to absorb hydrogen and release heat, causing the metal hydrogen storage material to gradually heat up to near the hydrogen release temperature. Meanwhile, the portion of the metal hydrogen storage material that has just been transferred to the hydrogen absorption and heat release zone is at a high temperature. The sensible heat of the metal hydrogen storage material is used to release hydrogen, causing the metal hydrogen storage material to gradually cool down to near the hydrogen absorption temperature. At the same time, hydrogen at different pressures is released sequentially from high pressure to low pressure and sent to each storage chamber of the pressure hydrogen replacement center 27 for storage. For temperature-dependent metal hydrogen storage materials, the opposite is true (temperature-dependent metal hydrogen storage materials are defined as those that absorb high-pressure hydrogen at high temperatures, releasing high-temperature heat, and release low-pressure hydrogen at low temperatures, providing low-temperature cooling): The portion of the metal hydrogen storage material just transferred to the hydrogen-absorbing heat release zone is at a high temperature. Hydrogen is released using the sensible heat of this portion of the metal hydrogen storage material, causing it to gradually cool down to near the hydrogen release temperature. Simultaneously, hydrogen at different pressures is released sequentially from high pressure to low pressure and sent to the respective storage chambers of the pressure hydrogen replacement center 27 for storage. Conversely, the portion of the metal hydrogen storage material just transferred to the hydrogen-absorbing heat release zone is at a low temperature. Hydrogen is then sequentially introduced into the storage chambers of the pressure hydrogen replacement center 27 in order from low pressure to high pressure to absorb hydrogen and release heat, causing this portion of the metal hydrogen storage material to gradually heat up to near the hydrogen absorption temperature. The amount of hydrogen at different pressures consumed by the metal hydrogen storage material during heating from the pressure hydrogen replacement center 27 is equal to the amount of hydrogen at different pressures sent to the pressure hydrogen replacement center during cooling. Figure 8 This is a schematic diagram of the structure of the pressure hydrogen replacement center 27 in Example 5. The following describes the hydrogen absorption / desorption process and the operation of the pressure hydrogen replacement center 27 in conjunction with the metal hydride hydrogen pressurization unit 17: The pressure hydrogen replacement center is divided into 15 storage chambers, which store hydrogen at pressures of 2.56 MPa, 2.18 MPa, 1.85 MPa, 1.56 MPa, 1.31 MPa, 1.1 MPa, 0.92 MPa, 0.76 MPa, 0.63 MPa, 0.52 MPa, 0.43 MPa, 0.35 MPa, 0.28 MPa, 0.23 MPa, and 0.18 MPa, respectively, in order from high pressure to low pressure.

[0080] At the end of the hydrogen absorption cycle, the metal hydrogen storage material located in the hydrogen absorption and exothermic zone has a temperature of -49℃. It is then transferred to the hydrogen exothermic and exothermic zone using a rotating device. Next, hydrogen gas is introduced from the 0.18MPa storage chamber of the pressure hydrogen replacement center. After absorbing hydrogen, the metal hydrogen storage material releases the heat of reaction, causing its temperature to rise to -46.3℃. Then, hydrogen gas is introduced from the 0.23MPa storage chamber of the pressure hydrogen replacement center. After absorbing hydrogen, the metal hydrogen storage material releases the heat of reaction, causing its temperature to rise to -43.4℃. Similarly, following the order from low pressure to high pressure, hydrogen is sequentially introduced into the hydrogen storage chambers at pressures of 0.28 MPa, 0.35 MPa, 0.43 MPa, 0.52 MPa, 0.63 MPa, 0.76 MPa, 0.92 MPa, 1.1 MPa, 1.31 MPa, 1.56 MPa, 1.85 MPa, 2.18 MPa, and 2.56 MPa. As a result, the temperature of the metal hydrogen storage material in this section gradually rises to -5.7℃.

[0081] At the end of the hydrogen release cycle, the metal hydrogen storage material located in the hydrogen release and heat absorption zone has a temperature of -2.8℃ and an internal hydrogen pressure of 3.0MPa. It is then transferred to the hydrogen absorption and heat release zone via a rotating device. Next, a valve is opened to connect it to the 2.56MPa storage chamber of the pressure hydrogen replacement center, allowing hydrogen to flow into the chamber and reducing its internal hydrogen pressure. This causes the metal hydrogen storage material to absorb its own sensible heat and release hydrogen. When its temperature drops to -5.7℃, it can release 2.56MPa of hydrogen. The valve is then switched to connect it to the 2.18MPa storage chamber of the pressure hydrogen replacement center, again allowing hydrogen to flow into the 2.18MPa storage chamber, reducing its internal hydrogen pressure and causing the metal hydrogen storage material to absorb its own sensible heat. The material releases hydrogen by sensible heat; when its temperature drops from -5.7℃ to -8.6℃, it can release 2.18MPa of hydrogen gas. Similarly, following the order from high pressure to low pressure, the valves are switched to connect sequentially to the 1.85MPa, 1.56MPa, 1.31MPa, 1.1MPa, 0.92MPa, 0.76MPa, 0.63MPa, 0.52MPa, 0.43MPa, 0.35MPa, 0.28MPa, 0.23MPa, and 0.18MPa gas storage chambers of the pressure hydrogen replacement center. Using its sensible heat, it sequentially releases hydrogen gas at each pressure into the respective pressure storage chamber, while the temperature of this part of the metal hydrogen storage material gradually decreases to -46.3℃.

[0082] The metal hydride hydrogen pressurization unit 17 and the Cropp device 34 provided in this application embodiment conform to the following Cropp's law: 1. Coleridge's First Law It is always possible to find at least two metal hydrides, including temperature-positive and / or temperature-negative metal hydrides, to form at least one cycle, which utilizes ambient energy or system energy, including system heat dissipation, to obtain pressurized hydrogen under a certain state to do work and generate corresponding forms of energy, thus becoming part of the cycle described above; while the cycle consumption within the cycle system is relatively small and comes from a portion of the work it does.

[0083] 2. Coleridge's Second Law For a given high-pressure hydrogen and a given low-pressure hydrogen, there can always be a cycle consisting of at least two metal hydrides to produce medium-pressure hydrogen at the corresponding pressure, while the cycle consumption is relatively small; the mass of medium-pressure hydrogen is the sum of the mass of the high-pressure hydrogen and the low-pressure hydrogen, and the required mass ratio of high-pressure hydrogen to low-pressure hydrogen is related to the following two factors: one is the expansion ratio between high-pressure hydrogen and medium-pressure hydrogen; the other is the compression ratio between low-pressure hydrogen and medium-pressure hydrogen.

[0084] 3. Coleridge's Third Law For a metal hydride undergoing hydrogen absorption / desorption cycles at two different plateau pressures, the hydride inevitably experiences sensible heat loss during each cycle as it switches between high and low temperatures (corresponding to high and low plateau pressures). This loss constitutes a major expense in completing the hydrogen absorption / desorption cycle. To reduce this expense, it is necessary to optimize the heat exchange between the high-temperature and low-temperature metal hydrides during the high / low temperature switching. One effective heat exchange optimization measure is to utilize the sensible heat of the high-temperature metal hydride for hydrogen desorption, gradually releasing hydrogen gas at different pressures (from high to low). This hydrogen gas at different pressures (from low to high) is then supplied to the low-temperature metal hydride for hydrogen absorption, releasing heat and gradually raising its temperature.

[0085] Example 5 Embodiment 5 of this application provides a combined cycle power generation system employing a Krupp solid fuel steam turbine, a gas turbine, and a Krupp unit. For example... Figure 6 As shown, this combined cycle power generation system is basically the same as that of Example 4, except that the combined cycle power generation system of Example 5 adds a steam turbine 2 and a condenser 13. The combined cycle power generation system of Example 4 can also be configured similarly.

[0086] Steam turbine 2 utilizes the high-temperature, high-pressure steam generated from the reaction heat released by the reaction between high-temperature steam and high-temperature Cropped solid fuel (such as ferrosilicon) in Cropped solid fuel boiler 1 to perform work. The reaction heat from Cropped solid fuel boiler 1 is used not only to generate steam but also for hydrogen release and heat absorption in the metal hydride hydrogen pressurization unit 17. The hydrogen product of the reaction between the high-temperature steam and high-temperature Cropped solid fuel (such as ferrosilicon) in Cropped solid fuel boiler 1 is supplied to the gas turbine power generation unit as fuel.

[0087] The gas turbine power generation unit mainly utilizes hydrogen produced by the Krupp solid fuel boiler 1 to burn under high pressure, generating high-temperature and high-pressure flue gas to drive the turbine 7 to perform work. After the flue gas has performed work, the water vapor in it is condensed and recovered after waste heat recovery, and the non-condensable gases (mainly nitrogen) are also sent to the storage tank 25 for storage.

[0088] The Krepp waste heat recovery power generation unit mainly utilizes the high-pressure hydrogen generated by the Krepp unit 34 to recover waste heat from various parts of the system, including flue gas waste heat, steam condensation heat from the steam turbine, hydrogen absorption reaction heat from the metal hydride hydrogen pressurization unit 17, waste heat from the intercooler of the compressor 6, and sensible heat from silica and unreacted cocoa in the silica heat exchanger 26. After recovering the above waste heat, the high-pressure hydrogen with increased temperature is sent to the multi-stage hydrogen expander 21 for expansion and power generation. After expansion and power generation, the hydrogen is cooled and depressurized and then sent back to the Krepp unit for hydrogen absorption and recycling.

[0089] The gas outlet 1-3 (mainly hydrogen) on the shell side of the Krupp solid fuel boiler 1 enters the metal hydride hydrogen pressurization unit 17 after passing through the tube side of the heat exchanger 23. After being pressurized by the metal hydride hydrogen pressurization unit 17, it is connected to the combustion chamber 5 of the gas turbine 3. In embodiment 5, the combustion chamber 5 of the gas turbine 3 is equipped with a hydrogen nozzle 14, and the gas outlet 1-3 on the shell side of the Krupp solid fuel boiler 1 is connected to the hydrogen nozzle 14 through the tube side of the heat exchanger 23 and the metal hydride hydrogen pressurization unit 17.

[0090] The exhaust gas from the turbine 7 in the gas turbine 3 passes through the shell side of the evaporator 24 and the shell side of the steam recovery unit 12 before entering the storage tank 25.

[0091] The outlet of the first tube side 1-1 of the Clearpool solid fuel boiler 1 is connected to the high-pressure steam inlet 2-1 of the steam turbine 2. The steam outlet 2-2 at the tail of the steam turbine 2 returns to the inlet of the first tube side 1-1 of the Clearpool solid fuel boiler 1 via the shell side of the condenser 13 and a high-pressure water pump. The Clearpool solid fuel boiler 1 can use space combustion, employing metals (including but not limited to ferrosilicon) as fuel; or a molten pool can be installed inside the Clearpool solid fuel boiler 1, using a high-temperature molten pool to achieve the reaction between metals (including but not limited to ferrosilicon) and steam. Catalysts or flammable agents can be added to the Clearpool solid fuel boiler 1 to promote metal combustion or reaction. When ferrosilicon is used as fuel, ferrosilicon and steam react in the Clearpool solid fuel boiler 1 to produce H2 and silicon dioxide. After H2 is discharged from the gas outlet 1-3 on the shell side of the Clearpool solid fuel boiler 1, it is connected to the hydrogen nozzle 14 via the tube side of the heat exchanger 23 and the metal hydride hydrogen pressurization unit 17.

[0092] for Figure 6 The combined cycle power generation system shown below operates as follows: The CREP solid fuel boiler 1 uses metals (including but not limited to ferrosilicon) as fuel, referred to as CREP solid fuel. CREP solid fuel reacts with steam in the CREP solid fuel boiler 1 to produce combustible gases (including but not limited to hydrogen) and metal oxides (including but not limited to silicon dioxide). The combustible gases generated in the CREP solid fuel boiler 1 are cooled by the tube side of heat exchanger 23 and pressurized by the metal hydride hydrogen pressurization unit 17 before being sent to the gas turbine 3 as fuel. The reaction between the CREP solid fuel and steam in the CREP solid fuel boiler 1 releases a large amount of heat, which can be used to generate high-pressure steam, which is then sent to the steam turbine 2 for expansion and work. The CREP unit 34 can absorb low-pressure hydrogen to produce high-pressure hydrogen. The high-pressure hydrogen produced by the CREP unit 34 absorbs waste heat from various parts of the combined cycle power generation system, is heated, and then sent to the multi-stage hydrogen expander 21 for expansion and work. After work, the cooled and depressurized hydrogen is returned to the CREP unit 34 for hydrogen absorption and recycling. Steam turbine 2, gas turbine 3 and multi-stage hydrogen expander 21 are coaxially connected and together drive generator 4 to generate electricity.

[0093] In Example 5, the Krupp solid fuel (ferrosilicon with 75% silicon content) from the outside first exchanges heat with the high-temperature solid products (silicon dioxide and unreacted coco) of the Krupp solid fuel boiler 1 at 1280°C to raise its temperature to 1000°C. Then, it enters the Krupp solid fuel boiler 1 together with 1000°C, 0.1MPa steam from the shell-side outlet of heat exchanger 23 to react. The reaction produces hydrogen gas at 1280°C, 0.1MPa and solid products (silicon dioxide and unreacted coco) at 1280°C, releasing a large amount of heat. The 1280°C, 0.1MPa hydrogen gas is cooled to 105°C through heat exchange in the tube side of heat exchanger 23 and then sent to the metal hydride hydrogen pressurization unit 17 for hydrogen absorption. The 1280℃ high-temperature solid products (silicon dioxide and unreacted Kolbus) are first cooled by heat exchange with Kolbus solid fuel (ferrosilicon with 75% silicon content) from the outside, and then sent to silicon dioxide heat exchanger 26 for further recovery of waste heat and discharge at room temperature. Most of the large amount of reaction heat released is used to evaporate and superheat the 25.4 MPa, 91.6℃ high-pressure water entering from the inlet of the first tube 1-1 to produce steam at 25.4 MPa, 993.8℃; a small portion is supplied to the metal hydride hydrogen pressurization unit 17 for hydrogen release and heat absorption.

[0094] Steam at 25.4 MPa and 993.8°C, originating from the outlet of the first tube side 1-1 of the Krupp solid fuel boiler 1, enters the steam turbine 2 for expansion and work, then cools and depressurizes to 0.1 MPa and 100°C before exiting the steam turbine 2. This 0.1 MPa, 100°C exhaust steam is sent to the condenser 13 for condensation, yielding condensate at 0.1 MPa and 90°C. The condensate is then pressurized by a high-pressure water pump to 25.4 MPa and 91.6°C before being returned to the inlet of the first tube side 1-1 of the Krupp solid fuel boiler 1 for reuse.

[0095] The metal hydrogen storage material filled in the metal hydride hydrogen pressurization unit 17 first absorbs hydrogen gas at 105°C and 0.1MPa from the tube-side outlet of the heat exchanger 23, simultaneously releasing the heat of hydrogen absorption. Then, the heat exchange medium from the outlet of the heat exchange medium jacket of the metal hydride hydrogen pressurization unit 17 enters the inlet of the second tube side 1-2 of the Cropper solid fuel boiler 1. After absorbing heat and heating up, it is returned from the outlet of the second tube side 1-2 of the Cropper solid fuel boiler 1 to the inlet of the heat exchange medium jacket of the metal hydride hydrogen pressurization unit 17, transferring heat to the fully hydrogen-absorbed metal hydrogen storage material in the metal hydride hydrogen pressurization unit 17 for its hydrogen release and heat absorption, releasing hydrogen gas at 2.5MPa and 291.1°C. This 2.5MPa, 291.1°C hydrogen gas is then sent to the combustion chamber 5 of the gas turbine 3 as fuel.

[0096] Combustion air at 0.1 MPa and 20°C (excess coefficient 1.85) from the outside is first compressed to 0.5 MPa and 190°C by compressor 6; then cooled to 20°C by the shell side 6-1 of the intercooler; and then sent back to compressor 6 for compression to 2.5 MPa and 190.8°C before being sent into the combustion chamber 5 of gas turbine 3. Hydrogen at 2.5 MPa and 291.1°C and combustion air at 2.5 MPa and 190.8°C (excess coefficient 1.93) are combusted in combustion chamber 5 to generate flue gas at 2.5 MPa and 1602.2°C. Flue gas at 2.5 MPa and 1602.2℃ is fed into turbine 7 for expansion and work. After expansion and work, flue gas at 0.1 MPa and 626.7℃ first recovers heat through the shell side of evaporator 24, and then is sent to the shell side of steam recovery unit 12 to condense and recover water vapor in the flue gas. Finally, non-condensable gas (mainly nitrogen) is cooled to 20℃ in steam recovery unit 12 and stored in storage tank 25.

[0097] The condensate outlet of steam recovery unit 12 receives water at 0.1 MPa and 99°C, which is then sent to the tube side of evaporator 24 to evaporate and generate steam at 0.1 MPa and 100°C. This steam at 0.1 MPa and 100°C is then heated to 1000°C by exchanging heat with hydrogen at 0.1 MPa and 1280°C at the inlet of heat exchanger 23 via the shell side, and then sent to the Krupp solid fuel boiler 1 for recycling.

[0098] The high-pressure hydrogen gas (2.5 MPa, -2.8°C) generated by the Krupp unit is divided into five parts, which are respectively sent to the second tube side 132 of condenser 13, the tube side of steam recovery unit 12, the intercooler tube side 6-2 of compressor 6, the tube side of silica heat exchanger 26, and the heat exchange medium jacket of metal hydride hydrogen pressurization unit 17 (hydrogen absorption and heat release zone). After absorbing heat and heating to 85°C, it enters the inlet of multi-stage hydrogen expander 21. The hydrogen gas at 1.85 MPa and 55.5°C at the first expansion outlet of multi-stage hydrogen expander 21 absorbs heat and is reheated to 77.5°C after passing through the first tube side 131 of condenser 13, and is then sent back to the second expansion inlet of multi-stage hydrogen expander 21. The hydrogen gas at 0.76 MPa and -1.8°C at the fourth expansion outlet of multi-stage hydrogen expander 21 is sent back to Krupp unit 34 for hydrogen absorption.

[0099] The combined cycle power generation system of the Krupp solid fuel steam turbine, gas turbine and Krupp unit provided in Example 5 has a high thermal efficiency of not less than 90%.

[0100] Example 6 Figure 9 This application illustrates a combined cycle power generation system using a Krupp solid fuel steam turbine, gas turbine, and Krupp unit, as provided in Embodiment 6 of this application. Its composition and structure are basically the same as... Figure 6 The combined cycle power generation system shown is the same, except that the hydrogen nozzle 14 in the gas turbine 3 is replaced with a liquid hydrogen nozzle 16; a liquid air nozzle 28 is added to the combustion chamber 5 of the gas turbine 3; the compressor 6 in the gas turbine 3 is removed; the metal hydride hydrogen pressurization unit 17 and the second tube side 1-2 in the Krupp solid fuel boiler 1 in the combined cycle power generation system are removed; and a liquefaction unit 15 and its associated pressurization pump are added to the combined cycle power generation system. Alternatively, a certain proportion of liquid nitrogen can be added to liquid hydrogen and liquid oxygen before they are fed into the combustion chamber 5 of the gas turbine 3 for combustion. The combined cycle power generation system of Example 4 can also be configured similarly.

[0101] for Figure 9 The combined cycle power generation system shown below operates as follows: The Krepp solid fuel boiler 1 uses ferrosilicon as fuel. Ferrosilicon reacts with steam in the Krepp solid fuel boiler 1 to produce hydrogen and silicon dioxide. The hydrogen produced in the Krepp solid fuel boiler 1 is sent to the liquefaction unit 15 for liquefaction after heat exchange in heat exchanger 23. The resulting liquid hydrogen is pressurized to 2.5 MPa by a liquid hydrogen pump and then sent to the combustion chamber of the gas turbine 3 as fuel. Outside air is also sent to the liquefaction unit 15 for liquefaction. The resulting liquid air is pressurized to 2.5 MPa by a liquid air pump and then sent to the combustion chamber of the gas turbine 3 as an auxiliary combustion gas. The reaction between ferrosilicon and steam in the Krepp solid fuel boiler 1 releases a large amount of heat, which is used to generate high-pressure steam. This high-pressure steam is sent to the steam turbine 2 for expansion and work. The steam turbine 2 and the gas turbine 3 are coaxially connected and together drive the generator 4 to generate electricity.

[0102] In the combustion chamber 5 of the gas turbine 3, liquid hydrogen and liquid air undergo complete combustion to produce high-temperature, high-pressure combustion exhaust gas. This high-temperature, high-pressure exhaust gas is fed into the turbine 7 of the gas turbine 3 for expansion and work, driving the generator 4 to generate electricity. An evaporator 24 and a steam recovery unit 12 are located at the turbine exhaust port of the gas turbine 3. The evaporator 24 recovers the waste heat from the expanded, low-pressure combustion exhaust gas, while the steam recovery unit 12 condenses and recovers water, storing the remaining gas in a storage tank 25. The water recovered by the steam recovery unit 12 is heated through the tube side of the evaporator 24 and the shell side of the heat exchanger 23, and then sent back to the Cropper solid fuel boiler 1 as a reactant to react with ferrosilicon.

[0103] High-pressure steam is discharged from the outlet of the first tube side 1-1 of the Clearwater solid fuel boiler 1, and sent to the steam turbine 2 for expansion and work. The water vapor discharged from the steam turbine 2 is liquefied and pressurized by the condenser 13. The pressurized water enters the inlet of the first tube side 1-1 of the Clearwater solid fuel boiler 1, is heated into high-pressure steam in the first tube side 1-1 of the Clearwater solid fuel boiler 1, and is discharged from the outlet of the first tube side 1-1 of the Clearwater solid fuel boiler 1.

[0104] The combined cycle power generation system of the Krupp solid fuel steam turbine, gas turbine and Krupp plant provided in Example 6 has a high thermal efficiency of not less than 90%.

[0105] Example 7 Figure 10 This application illustrates a combined cycle power generation system using a Krupp solid fuel steam turbine, a gas turbine, and a Krupp unit, as provided in Embodiment 7 of this application. Its composition and structure are basically the same as... Figure 6The combined cycle power generation system shown is basically the same, except that a fan 8 is added in front of the compressor 6 of the gas turbine 3; an outer bypass duct 11 is set outside the combined power unit 22, which consists of the electric motor 4, steam turbine 2, multi-stage hydrogen expander 21, and gas turbine 3; an air inlet 30 is set on the outer bypass duct 11, located in front of the fan 8. The fan 8 is driven by the combined power unit 22 and is used to compress the outside air entering through the air inlet 30. The compressed outside air is ejected through the outer bypass duct 11, providing thrust. The combined cycle power generation system of Example 4 can also be configured similarly.

[0106] for Figure 10 The combined cycle power generation system shown below operates as follows: In the Cooler Master solid fuel (ferrosilicon), high-temperature steam reacts with Cooler Master solid fuel boiler 1 to produce high-temperature hydrogen and silicon dioxide, releasing heat. This heat is used to evaporate and superheat condensate from condenser 13. The high-temperature hydrogen is pressurized to 2.5 MPa by metal hydride hydrogen pressurization unit 17 and then sent to combustion chamber 5 of gas turbine 3 as fuel. Gas turbine 3 is equipped with compressor 6, which compresses combustion air from the outside. The combustion air, compressed to 2.5 MPa by compressor 6, is also sent to combustion chamber 5 of gas turbine 3. The high-pressure hydrogen and combustion air completely combust to produce high-temperature, high-pressure combustion exhaust gas. This high-temperature, high-pressure combustion exhaust gas is sent to turbine 7 of gas turbine 3 for expansion and work. Turbine 7 drives generator 4 to generate electricity and simultaneously drives compressor 6. The low-pressure combustion exhaust gas exiting from turbine 7 of gas turbine 3 passes through the shell side of evaporator 24 and the shell side of steam recovery unit 12 before being discharged. The exhaust gas from the gas turbine can also provide thrust.

[0107] Evaporator 24 is used to recover the waste heat of the low-pressure combustion exhaust gas after expansion, and steam recovery unit 12 is used to condense and recover water from the low-pressure combustion exhaust gas. The water recovered by steam recovery unit 12 is sent to the tube side of evaporator 24 to evaporate into low-temperature steam; the low-temperature steam enters the shell side of heat exchanger 23, is heated, and then sent to the Krupp solid fuel boiler 1 as a reactant to react with ferrosilicon.

[0108] In the Clearpool solid fuel boiler 1, the reaction between ferrosilicon and steam releases a large amount of heat. This heat is used to convert the water in the first tube side 1-1 of the Clearpool solid fuel boiler 1 into high-pressure steam. The high-temperature, high-pressure steam generated in the first tube side 1-1 of the Clearpool solid fuel boiler 1 expands and performs work in the steam turbine 2, and then the low-pressure steam is sent to the condenser 13 for heat exchange and condensation. The condensate is pressurized by a high-pressure water pump and then sent back to the first tube side 1-1 of the Clearpool solid fuel boiler 1 to generate high-temperature, high-pressure steam.

[0109] The combined cycle power generation system of the Krupp solid fuel steam turbine, gas turbine and Krupp plant provided in Example 7 has a high thermal efficiency of not less than 90%.

[0110] Example 8 Figure 11 This application illustrates a combined cycle power generation system using a Krupp solid fuel steam turbine, a gas turbine, and a Krupp unit, as provided in Embodiment 8 of this application. Its composition and structure are basically the same as... Figure 9 The combined cycle power generation system shown is basically the same, except that a fan 8 is added in front of the compressor 6 of the gas turbine 3; an outer bypass duct 11 is set outside the combined power unit 22, which consists of the electric motor 4, steam turbine 2, multi-stage hydrogen expander 21, and gas turbine 3; an air inlet 30 and an air outlet 31 are set on the outer bypass duct 11, with the air inlet 30 located in front of the fan 8. The fan 8 is driven by the combined power unit 22 and is used to compress the outside air entering through the air inlet 30. The compressed outside air is ejected through the outer bypass duct 11, providing thrust. The combined cycle power generation system of Example 4 can also be configured similarly.

[0111] for Figure 11 The combined cycle power generation system shown below operates as follows: In the Cooler Master solid fuel (ferrosilicon), high-temperature steam reacts with Cooler Master solid fuel boiler 1 to produce high-temperature hydrogen and silicon dioxide, releasing heat. This heat is used to evaporate and superheat condensate from condenser 13. The high-temperature hydrogen, after heat exchange in heat exchanger 23, is sent to liquefaction unit 15 for liquefaction. The resulting liquid hydrogen is pressurized to 2.5 MPa by a liquid hydrogen pump and then sent to combustion chamber 5 of gas turbine 3 as fuel. Air from the outside is also sent to liquefaction unit 15 via air inlet 30 and air outlet 31 on the outer bypass duct 11 for liquefaction. The resulting liquid air is pressurized to 2.5 MPa by a liquid air pump and then sent to combustion chamber 5 of gas turbine 3 as combustion-supporting gas. Alternatively, a certain proportion of liquid nitrogen can be added to liquid hydrogen and liquid oxygen before combustion in combustion chamber 5 of gas turbine 3. The complete combustion of liquid hydrogen and liquid air produces high-temperature, high-pressure combustion exhaust gas. This high-temperature, high-pressure combustion exhaust gas is sent to turbine 7 of gas turbine 3 for expansion and work, driving generator 4 to generate electricity. The low-pressure combustion exhaust gas from the turbine 7 exhaust port of gas turbine 3 passes through the shell side of evaporator 24 and the shell side of steam recovery unit 12 before being discharged. The combustion exhaust gas ejected from gas turbine 3 can also provide thrust.

[0112] Evaporator 24 is used to recover the waste heat of the low-pressure combustion exhaust gas after expansion, and steam recovery unit 12 is used to condense and recover water from the low-pressure combustion exhaust gas. The water recovered by steam recovery unit 12 is sent to the tube side of evaporator 24 to evaporate into low-temperature steam; the low-temperature steam enters the shell side of heat exchanger 23, is heated, and then sent to the Krupp solid fuel boiler 1 as a reactant to react with ferrosilicon.

[0113] In the Clearpool solid fuel boiler 1, the reaction between ferrosilicon and steam releases a large amount of heat. This heat is used to convert the water in the first tube side 1-1 of the Clearpool solid fuel boiler 1 into high-pressure steam. The high-temperature, high-pressure steam generated in the first tube side 1-1 of the Clearpool solid fuel boiler 1 expands and performs work in the steam turbine 2, and then the low-pressure steam is sent to the condenser 13 for heat exchange and condensation. The condensate is pressurized by a high-pressure water pump and then sent back to the first tube side 1-1 of the Clearpool solid fuel boiler 1 to generate high-temperature, high-pressure steam.

[0114] The combined cycle power generation system of the Krupp solid fuel steam turbine, gas turbine and Krupp plant provided in Example 8 has a high thermal efficiency of not less than 90%.

[0115] Example 9 Figure 12 This is a schematic diagram of the combined cycle power generation system using Krupp solid fuel provided in Embodiment 9 of this application. Compared with the combined cycle power generation system in Embodiment 1, the combined cycle power generation system provided in Embodiment 9 adds a backup heating inlet 1-6 to the Krupp solid fuel boiler 1. The combined cycle power generation system provided in Embodiment 9 has two operating modes.

[0116] Work Mode 1: The Krupp solid fuel inlet and steam inlet of the Krupp solid fuel boiler 1 are shut off, and the standby heating inlets 1-6 are opened. In operating mode one, the first portion of high-pressure hydrogen released from the Krupp unit 34 is sent to the shell side of the hydrogen heat exchanger 10 and the third tube side 1-4 of the Krupp solid fuel boiler 1. After absorbing heat from the heating inlet and heating to 85°C, the hydrogen enters the third-stage expansion inlet of the multi-stage hydrogen expander 21, where it performs work. When operating mode one is used, the power generation of the combined cycle power generation system provided in Example 9 is approximately 45% of that in operating mode two. Operating mode one does not emit any waste gas, including nitrogen.

[0117] Working Mode Two: Disconnect the backup heating inlets 1-6 and open the Krupp solid fuel inlet and steam inlet of the Krupp solid fuel boiler 1. The operation process of operating mode two is exactly the same as that of the combined cycle power generation system provided in Example 1, and will not be described again here. Operating mode two is suitable for high-power applications.

[0118] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A combined cycle power generation system using Collipport solid fuel, characterized in that, It includes a Krupp solid fuel boiler (1), a hydrogen combustion chamber (9), an evaporator (24), a heat exchanger (23), a generator (4), and a Krupp waste heat recovery power generation unit; the Krupp waste heat recovery power generation unit includes a Krupp unit (34), a hydrogen heat exchanger (10), a multi-stage hydrogen expander (21), a steam recovery unit (12), and a silica heat exchanger (26). The multi-stage hydrogen expander (21) and the generator (4) are coaxially arranged and drive the generator (4) to generate electricity; The combustible gas outlet on the shell side of the Krupp solid fuel boiler (1) is directly or indirectly connected to the hydrogen combustion chamber (9); the combustion exhaust gas outlet of the hydrogen combustion chamber (9) is connected to the storage tank (25) after passing through the evaporator (24) and the steam recovery unit (12). The high-pressure hydrogen produced by the release of hydrogen from the Krupp unit (34) is divided into four parts, which are sent to the third tube side (1-4) of the Krupp solid fuel boiler (1), the tube side of the silica heat exchanger (26), the tube side of the hydrogen combustion chamber (9), and the tube side of the steam recovery unit (12), respectively; after absorbing heat and heating up, it enters the inlet of the multi-stage hydrogen expander (21).

2. The combined cycle power generation system as described in claim 1, characterized in that, The Krupp solid fuel boiler (1) also includes a backup heating inlet (1-6).

3. A combined cycle power generation system using Krupp solid fuel, characterized in that, It includes a Krupp solid fuel boiler (1) and a Krupp waste heat recovery power generation unit; the Krupp waste heat recovery power generation unit includes a Krupp unit (34), a hydrogen heat exchanger (10), a multi-stage hydrogen expander (21) and a silica heat exchanger (26). The multi-stage hydrogen expander (21) and generator (4) are coaxially arranged and drive the generator (4) to generate electricity; the metal oxides discharged after combustion of the Krupp solid fuel boiler (1) are cooled by the shell side of the silica heat exchanger (26) and then discharged. The high-pressure hydrogen produced by the release of hydrogen from the Krupp unit (34) is divided into two parts. The first part passes through the shell side of the hydrogen heat exchanger (10) and the third tube side (1-4) of the Krupp solid fuel boiler (1) in sequence. After absorbing heat and heating up, it enters the third expansion inlet of the multi-stage hydrogen expander (21). After doing work in the multi-stage hydrogen expander (21), it is discharged from the fourth expansion outlet of the multi-stage hydrogen expander (21). The second part is sent to the tube side of the silica heat exchanger (26). After absorbing heat and heating up, the hydrogen enters the first expansion inlet of the multi-stage hydrogen expander (21). After doing work in the multi-stage hydrogen expander (21), it is discharged from the second expansion outlet of the multi-stage hydrogen expander (21). The hydrogen from the fourth expansion outlet of the multi-stage hydrogen expander (21) is cooled down after passing through the tube side of the hydrogen heat exchanger (10) and mixed with the hydrogen from the second expansion outlet of the multi-stage hydrogen expander (21). The mixed hydrogen is returned to the Krupp unit (34) for hydrogen absorption.

4. The combined cycle power generation system as described in claim 3, characterized in that, It also includes a flue gas heat exchanger (18); the flue gas generated after combustion of the Krupp solid fuel boiler (1) is cooled by the waste heat recovery of the shell side of the flue gas heat exchanger (18) before being discharged; The high-pressure hydrogen produced by the release of hydrogen from the Krupp unit (34) is divided into three parts. The first part passes through the shell side of the hydrogen heat exchanger (10) and the third tube side (1-4) of the Krupp solid fuel boiler (1) in sequence. After absorbing heat and heating up, it enters the third expansion inlet of the multi-stage hydrogen expander (21). After doing work in the multi-stage hydrogen expander (21), it is discharged from the fourth expansion outlet of the multi-stage hydrogen expander (21). The second part is sent to the tube side of the silica heat exchanger (26). After absorbing heat and heating up, it enters the first expansion inlet of the multi-stage hydrogen expander (21). After doing work, the hydrogen gas is discharged from the secondary expansion outlet of the multi-stage hydrogen expander (21); the third part is sent to the tube side of the flue gas heat exchanger (18), where it absorbs heat and heats up before entering the first expansion inlet of the multi-stage hydrogen expander (21). After doing work in the multi-stage hydrogen expander (21), the hydrogen gas is discharged from the secondary expansion outlet of the multi-stage hydrogen expander (21); the hydrogen gas from the fourth expansion outlet of the multi-stage hydrogen expander (21) is cooled down after passing through the tube side of the hydrogen heat exchanger (10) and mixed with the hydrogen gas from the secondary expansion outlet of the multi-stage hydrogen expander (21). The mixed hydrogen gas is returned to the Krupp unit (34) for hydrogen absorption.

5. A combined cycle power system using Colespur solid fuel, characterized in that, The system includes a Krupp solid fuel boiler (1), a generator (4), a gas turbine power generation unit, and a Krupp waste heat recovery power generation unit; the gas turbine power generation unit includes a metal hydride hydrogen pressurization unit (17), a gas turbine (3), an evaporator (24), and a heat exchanger (23); the Krupp waste heat recovery power generation unit includes a Krupp unit (34), a multi-stage hydrogen expander (21), a steam recovery unit (12), and a silica heat exchanger (26); the multi-stage hydrogen expander (21) and the gas turbine (3) are coaxially integrated in sequence to form a combined power unit (22), which drives the generator (4) to generate electricity; The gas turbine (3) is equipped with a compressor (6), a combustion chamber (5), and a turbine (7); the compressor (6) is used to compress the combustion gas to a preset pressure and deliver the compressed combustion gas to the combustion chamber (5); a fan (8) is provided in front of the compressor (6) of the gas turbine (3); an outer bypass duct (11) is provided outside the combined power unit (22) consisting of the motor (4), the multi-stage hydrogen expander (21), and the gas turbine (3); an air inlet (30) is provided on the outer bypass duct (11), and the air inlet (30) is located in front of the fan (8); an evaporator (24) and a steam recovery unit (12) are provided at the rear end of the turbine (7). The combustible gas outlet on the shell side of the Krupp solid fuel boiler (1) is directly or indirectly connected to the combustion chamber (5) of the gas turbine (3); the combustion exhaust gas outlet of the turbine (7) in the gas turbine (3) is connected to the storage tank (25) after passing through the evaporator (24) and the steam recovery unit (12). The high-pressure hydrogen produced by the release of hydrogen from the Krupp unit (34) is divided into five parts, which are respectively sent to the third tube side (1-4) of the Krupp solid fuel boiler (1), the intercooler tube side (6-2) of the compressor (6), the tube side of the silica heat exchanger (26), the heat exchange medium jacket of the hydrogen absorption and heat release zone of the metal hydride hydrogen pressurization unit (17), and the tube side of the steam recovery unit (12); after absorbing heat and heating up, it enters the inlet of the multi-stage hydrogen expander (21).

6. A combined cycle power generation system using Krupp solid fuel, characterized in that, It includes a gas turbine power generation unit and a Krupp waste heat recovery power generation unit; the gas turbine power generation unit includes a Krupp solid fuel boiler (1), an evaporator (24), a heat exchanger (23), a metal hydride hydrogen pressurization unit (17), and a gas turbine (3); the Krupp waste heat recovery power generation unit includes a Krupp unit (34), a multi-stage hydrogen expander (21), a steam recovery unit (12), and a silica heat exchanger (26); The multi-stage hydrogen expander (21) and the gas turbine (3) are arranged coaxially in sequence to form a combined power machine, which drives the generator (4) to generate electricity; The gas turbine (3) is provided with a combustion chamber (5), and a compressor (6) and a turbine (7) are provided on both sides of the combustion chamber (5). An evaporator (24) and a steam recovery unit (12) are provided at the rear end of the turbine (7). The combustible gas outlet on the shell side of the Krupp solid fuel boiler (1) is directly or indirectly connected to the combustion chamber (5) of the gas turbine (3); the combustion exhaust gas outlet of the turbine (7) in the gas turbine (3) is connected to the storage tank (25) after passing through the evaporator (24) and the steam recovery unit (12).

7. The combined cycle power generation system as described in claim 6, characterized in that, The combined cycle power generation system also includes a steam turbine (2) and a condenser (13); the steam turbine (2), the multi-stage hydrogen expander (21) and the gas turbine (3) are arranged coaxially in sequence to form a combined power generator, which drives the generator (4) to generate electricity; the first tube outlet of the Krupp solid fuel boiler (1) is connected to the high-pressure steam inlet of the steam turbine (2), and the steam outlet at the tail of the steam turbine (2) returns to the first tube inlet of the Krupp solid fuel boiler (1) through the condenser (13).

8. The combined cycle power generation system as described in claim 6 or 7, characterized in that, The combustion chamber (5) of the gas turbine (3) is equipped with a hydrogen nozzle (14).

9. The combined cycle power generation system as described in claim 6, characterized in that, The high-temperature hydrogen produced by the Krupp solid fuel boiler (1) is pressurized by the metal hydride hydrogen pressurization unit (17) and sent to the combustion chamber (5) of the gas turbine (3) as fuel; The high-pressure hydrogen produced by the release of hydrogen from the Krupp unit (34) is divided into five parts, which are respectively sent to the third tube side (1-4) of the Krupp solid fuel boiler (1), the tube side of the steam recovery unit (12), the tube side of the intercooler of the compressor (6) (6-2), the tube side of the silica heat exchanger (26), and the heat exchange medium jacket of the hydrogen absorption and heat release zone of the metal hydride hydrogen pressurization unit (17); after absorbing heat and heating up, it enters the inlet of the multi-stage hydrogen expander (21).

10. The combined cycle power generation system as described in claim 7, characterized in that, The high-temperature hydrogen produced by the Krupp solid fuel boiler (1) is pressurized by the metal hydride hydrogen pressurization unit (17) and sent to the combustion chamber (5) of the gas turbine (3) as fuel; The high-pressure hydrogen produced by the release of hydrogen in the Krupp unit (34) is divided into five parts, which are respectively sent to the second tube side (132) of the condenser (13), the tube side of the steam recovery unit (12), the tube side of the intercooler of the compressor (6) (6-2), the tube side of the silica heat exchanger (26), and the heat exchange medium jacket of the hydrogen absorption and heat release zone of the metal hydride hydrogen pressurization unit (17); after absorbing heat and heating up, it enters the inlet of the multi-stage hydrogen expander (21).

11. The combined cycle power generation system as described in claim 6 or 7, characterized in that, The combined cycle power generation system also includes a liquefaction unit (15); the combustion chamber (5) of the gas turbine (3) is equipped with a liquid hydrogen nozzle (16); the combustible gas outlet on the shell side of the Krupp solid fuel boiler (1) is liquefied by the liquefaction unit (15) and connected to the liquid hydrogen nozzle (16).

12. The combined cycle power generation system as described in claim 6 or 7, characterized in that, The combustion exhaust gas ejected from the gas turbine (3) serves as thrust to provide power.

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